To find the ratio of circles to all shapes, we will use the formula of ratio which is given by number of circles divided by the total number of shapes. Therefore, the ratio of circles to all shapes can be written as 99 divided by 139. This ratio can be simplified by dividing both the numerator and the denominator by the highest common factor, which is 11. Thus, the ratio of circles to all shapes is 9/13.
Logan drew 99 circles and 40 hearts. What is the ratio of circles to all shapes?To find the ratio of circles to all shapes, we need to add the number of circles and the number of hearts. This is because we want to know the fraction of all shapes that are circles.Therefore, the total number of shapes is:Total number of shapes = 99 circles + 40 heartsTotal number of shapes = 139 shapesNow, we can find the ratio of circles to all shapes:Ratio of circles to all shapes = number of circles ÷ total number of shapesRatio of circles to all shapes = 99 ÷ 139We can simplify this ratio by dividing both numbers by 11:Ratio of circles to all shapes = 9 ÷ 13The ratio of circles to all shapes is 9:13.In more than 100 words:Logan drew 99 circles and 40 hearts. To find the ratio of circles to all shapes, we need to add the number of circles and the number of hearts. This is because we want to know the fraction of all shapes that are circles. The total number of shapes is 99 circles plus 40 hearts which is equal to 139 shapes.
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The ratio of circles to all shapes for Logan's 99 circles and 40 hearts is 0.711 or 71.1%.
The ratio of circles to all shapes for Logan's 99 circles and 40 hearts can be determined as follows:
Step 1: Add the total number of shapes
99 circles + 40 hearts = 139 shapes
Step 2: Find the ratio of circles to all shapes by dividing the number of circles by the total number of shapes.
[tex]Ratio of circles to all shapes = Number of circles / Total number of shapes[/tex]
[tex]= 99 / 139[/tex]
[tex]= 0.711 or 71.1%[/tex]
Therefore, the ratio of circles to all shapes for Logan's 99 circles and 40 hearts is 0.711 or 71.1%.
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Look for Relationships Chris is buying material
for an art project. Two stores have the material she
needs. Compare prices to find which material is the
better value. Explain.
To compare the prices and determine which material offers better value, Chris needs to consider several factors beyond just the price. Here are some key points to consider:
Quality: Compare the quality of the materials offered by both stores. Sometimes, a higher-priced material may offer better quality, durability, or performance, making it a better value in the long run.
Quantity: Check the quantity or size of the materials available for the price. If one store offers a larger quantity or size for a slightly higher price, it might be a better value as it provides more material for the money.
Features: Look for any additional features or benefits offered by the materials. For example, if one material includes extra accessories or tools at a slightly higher price, it may be a better value due to the added value and convenience.
Customer reviews: Research online or ask for recommendations from others who have used the materials from both stores. Their experiences and feedback can provide insights into the overall value and performance of the materials.
By considering these factors, Chris can make an informed decision and choose the material that offers the best overall value for her art project.
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Your bathtub holds 80 gallons of water. The cold faucet adds water to the tub at 2142 and 1 fourth gallons per minute. The hot water faucet adds water to the tub at 1121 and 1 half gallon per minute. The drain lets water out at a rate of 343 over 4 gallon per minute. You start the bath by turning both faucets on, but forget to close the drain. The tub fills in 27 minutes. How large is the bathtub?
How will you solve the question?
To determine the size of the bathtub, we can use the information provided about the fill rate of the cold and hot water faucets, the drain rate, and the time it takes to fill the tub. The size of the bathtub is 42,471 gallons.
To determine the size of the bathtub, we can use the information provided about the fill rate of the cold and hot water faucets, the drain rate, and the time it takes to fill the tub. By subtracting the drain rate from the combined fill rate of the faucets and multiplying it by the time, we can find the net fill rate. Dividing the total amount of water filled in the given time by the net fill rate will give us the size of the bathtub.
First, we calculate the net fill rate per minute: (2142 1/4 + 1121 1/2) - (343/4) = 2142 1/4 + 1121 1/2 - 343/4.
Next, we multiply the net fill rate per minute by the time in minutes (27) to find the total water filled in that time.
To compute the net fill rate per minute, we need to convert the mixed numbers to improper fractions and perform the necessary calculations:
2142 1/4 + 1121 1/2 - 343/4 = 2149/4 + 2243/2 - 343/4 = 2149/4 + 4486/4 - 343/4 = (2149 + 4486 - 343)/4 = 6292/4 = 1573/1 = 1573.
The net fill rate per minute is 1573 gallons.
Next, we calculate the total water filled in 27 minutes:
Total water filled = net fill rate per minute × time in minutes = 1573 × 27 = 42,471 gallons.
Therefore, the size of the bathtub is 42,471 gallons.
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Yaw spent 2/5 of his monthly salary on food, 1/2 of the remaining on the rent and 1/4 of what still remained on drinks. If he still had ¢80 left, a. find his salary per month. b. how much did he spend on food? C. how much did he spend on rent?
Therefore, Yaw spent approximately ¢142.22 on food and ¢53.34 on rent.
Let's solve the problem step by step:
a. To find Yaw's monthly salary, we need to reverse the calculations. We start with the remaining amount after all the expenses and work our way back.
Let's assume Yaw's salary per month is S.
Yaw spent 2/5 of his salary on food, which means he has 3/5 of his salary remaining.
Then, he spent 1/2 of the remaining amount on rent, leaving him with 1/2 * (3/5) = 3/10 of his salary.
Finally, he spent 1/4 of what still remained on drinks, leaving him with 3/10 * (3/4) = 9/40 of his salary.
We are given that Yaw still had ¢80 left, which represents 9/40 of his salary:
(9/40)S = ¢80
To find S, we can solve the equation:
S = (¢80 * 40) / 9
S ≈ ¢355.56
Therefore, Yaw's monthly salary is approximately ¢355.56.
b. Yaw spent 2/5 of his salary on food. Substituting the value of S we found in part a:
(2/5) * ¢355.56 = ¢142.22
Yaw spent approximately ¢142.22 on food.
c. Yaw spent 1/2 of the remaining amount on rent. Substituting the value of S we found in part a:
(1/2) * (3/10) * ¢355.56 = ¢53.34
Yaw spent approximately ¢53.34 on rent.
Therefore, Yaw spent approximately ¢142.22 on food and ¢53.34 on rent.
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In what order, from shortest to longest, will Sakura use the pieces of twine in the mobile? Drag the numbers into the correct order from shortest to longest.
The order from shortest to longest, in which Sakura will use the pieces of twine is :
0.75 foot 4/5 foot = 0.8 foot5/6 foot = 0.83 foot How to find the order ?Firstly, let's convert all lengths to a common format, decimals or fractions. Let's use decimals:
5/6 foot = 0.83 foot (approx.)
0.75 foot
4/5 foot = 0.8 foot
So, the order will be the piece of twine that is 0.75 foot, then the piece that is 0.8 foot (or 4/5 foot in fraction form), and finally the piece that is 0.83 foot (or 5/6 foot in fraction form).
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The full question is:
Sakura is making a mobile. She has a spool of twine that she cuts into
lengths of 5/6 foot, 0.75 foot, and 4/5 foot.
Drag the numbers into the correct order from shortest to longest.
A national shipping company advertises that standard shipping can take up to seven days. If you were to write the null hypothesis in words, what would it be?
A) "The true mean shipping time would be 7 days or more"
B) "The true mean shipping time would take 7 days or less"
C) "The true mean shipping days would take more than 7 days"
D) "The true mean shipping time would take less than 7 days"
The null hypothesis, in this case, represents the assumption or statement that there is no significant difference or effect.
In the context of the shipping company and their advertised standard shipping time, the null hypothesis would state that the true mean shipping time is equal to or greater than seven days.
Therefore, the correct choice would be:
A) "The true mean shipping time would be 7 days or more"
This hypothesis assumes that the standard shipping time meets or exceeds the advertised duration of seven days. The null hypothesis is typically used as a baseline or starting point for statistical analysis, and it is the hypothesis that is tested against an alternative hypothesis to determine if there is sufficient evidence to reject or accept it.
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If 8 is multiplied by a fraction greater than 1, which of the could be the product
A 5
-
2
B 8
(C) 7
(D) 16
If 8 is multiplied by a fraction greater than 1, the product could be 16. Therefore, the correct option is (D) 16.
Multiplying 8 by a fraction greater than 1 will result in a number greater than 8.The greater the value of the fraction, the greater the product will be. Thus, the product of 8 multiplied by a fraction greater than 1 could be 16, since 8 × 2 = 16.
Therefore, the correct answer is option (D) 16.
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What is probably the most commonly cited disadvantage of using laboratory experiments to learn about human behavior
The most commonly cited disadvantage of using laboratory experiments to learn about human behavior is the lack of ecological validity.
Laboratory experiments involve studying human behavior in a controlled and artificial environment, often with specific tasks and conditions designed by researchers. While laboratory experiments offer advantages such as control over variables and the ability to establish cause-and-effect relationships, they also have limitations. One of the main disadvantages frequently mentioned is the lack of ecological validity. Ecological validity refers to the extent to which the findings from a study can be generalized to real-world settings and situations. Laboratory experiments often create an artificial setting that may not fully represent the complexities and nuances of everyday life.
Participants' behavior in a laboratory setting may differ from their behavior in natural settings due to factors such as the presence of observers, demand characteristics, and the controlled nature of the environment. As a result, the findings may not accurately reflect how individuals would behave in their natural environment, limiting the external validity and generalizability of the research findings. Researchers need to consider the trade-off between experimental control and ecological validity when designing studies and interpreting the results obtained from laboratory experiments.
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The second grade rate of a batch of products is 0.03, from the batch of randomly selected one, there are 100 times to put back, X is the number of second grade, then D (X) = ?
Put n = 100, p = 0.03, and X = each possible value from 0 to 100, we can calculate D(X) for each case. The resulting probabilities will represent the distribution : C(n, x) = n! / (x! * (n-x)!), n! represents the factorial of n.
In this case, we have a binomial distribution with n = 100 (number of selections) and p = 0.03 (probability of selecting a second-grade product). The distribution function D(X) represents the probability of getting exactly X second-grade products out of the 100 selections.
To calculate D(X), we need to evaluate the binomial probability function for each possible value of X from 0 to 100. The binomial probability function is given by:
D(X) = C(n, X) * p^X * (1-p)^(n-X)
where C(n, X) is the binomial coefficient or combination function, given by C(n, X) = n! / (X! * (n-X)!)
By substituting the values of n = 100, p = 0.03, and X = each possible value from 0 to 100, we can calculate D(X) for each case. The resulting probabilities will represent the distribution of the number of second-grade products in the batch.
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What is the value of q for which the lines qx−7y+10=20 and 4y+3x+9=0 are parallel to each other?
To determine the value of q for which the lines qx - 7y + 10 = 20 and 4y + 3x + 9 = 0 are parallel to each other, we need to compare their slopes.
First, we'll rewrite the equations in the standard form y = mx + b, where m represents the slope of the line:
For the line qx - 7y + 10 = 20, rearranging the equation gives us:
qx - 7y = 10
-7y = -qx + 10
y = (q/7)x - 10/7
For the line 4y + 3x + 9 = 0, rearranging the equation gives us:
4y = -3x - 9
y = (-3/4)x - 9/4
From the equations, we can see that the slopes are q/7 for the first line and -3/4 for the second line.
For two lines to be parallel, their slopes must be equal. Therefore, we can equate the slopes and solve for q:
q/7 = -3/4
Cross-multiplying, we have:
4q = -21
Dividing both sides by 4, we find:
q = -21/4
Therefore, the value of q for which the lines are parallel to each other is -21/4.
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A bag of pennies, nickels, dimes and quarters contains 120 coins with a total weight 240, worth a total of $12.30. If pennies and dimes weigh 1, nickels weigh 2 and quarters 3, how many coins of each type are there
Let the number of pennies, nickels, dimes, and quarters be P, N, D, and Q respectively.There are a total of 120 coinsTherefore:[tex]P + N + D + Q = 120[/tex] [Equation 1]and let the weight of a nickel and a quarter be 2N and 3N respectively. the bag contains 19 pennies, 3 nickels, 24 dimes, and 7 quarters.
According to the question, the total weight is 240. Therefore,[tex]1P + 1D + 2N + 3Q = 240[/tex] [Equation 2]Let the value of a penny, nickel, dime, and quarter be 1C, 5C, 10C, and 25C respectively.According to the question, the total value is [tex]$12.30[/tex]. Therefore,[tex]1P + 5N + 10D + 25Q = 1230[/tex] [Equation 3]
From Equation 1,[tex]P = 120 - N - D - Q.[/tex]
we can substitute [tex]N = 3A and D = 3B[/tex] in the equation above.
This gives: [tex]4(3A) + 9(3B) + 24Q = 1110[/tex] Simplifying this,
we get:[tex]4A + 3B + 8Q = 370[/tex]
From here, we can substitute Q = 1, 2, 3, ... and check which values of A and B satisfy this equation. After some calculations, we find that Q = 7, A = 19, and B = 8.
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the volume of a closed container is 40cm cubic if the height of the cylinder is 10cm what is its surface area in square cm
The surface area of the given cylinder is 20 √π + 8 cm².
Given,
Volume of a closed container= 40 cm³
Height of the cylinder= 10 cm
The formula for the volume of a cylinder is:
V = πr²h
Where, V = Volume,
r = radius of the circular base,
h = height.
Substituting the given values,
40 = πr² × 10
r² = 4 / π
r = √(4 / π)
Area of the circular base is: A = πr²
= π × (4 / π)
= 4
The surface area of the cylinder is the sum of the area of the circular bases and the lateral surface area.
A = 2πrh + 2πr²
Where, A = surface area of the cylinder,
r = √(4 / π),
h = 10
Substitute the given values, we get
A = 2 × π × √(4 / π) × 10 + 2 × π × (4 / π)
A = 20 √π + 8 cm²
Hence, the surface area of the given cylinder is 20 √π + 8 cm².
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Estimate the total cost of 32 printers at £198 each and 58 ink cartridges at
£31. 15 each.
The estimated total cost of 32 printers at £198 each and 58 ink cartridges at £31.
to estimate the total cost, we can multiply the quantity of each item by its respective cost and then sum them together.
the cost of 32 printers at £198 each can be calculated as follows:32 printers * £198/printer = £6336
the cost of 58 ink cartridges at £31.15 each can be calculated as follows:
58 cartridges * £31.15/cartridge = £1805.70
to find the total cost, we add the cost of the printers and the cost of the ink cartridges:total cost = £6336 + £1805.70 = £8141.70 15 each is £8141.70.
the total cost of 32 printers at £198 each and 58 ink cartridges at £31.
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The temperature of a certain liquid increases by 150 C in 3 minutes when it is heated. At this rate, what is the increase in temperature in 7 minutes?
The temperature of a certain liquid increases by 350 C in 7 minutes when it is heated. Determine the rate of temperature increase in the liquidRise in temperature / time taken = 150/3= 50C/min.
Given, The temperature of a certain liquid increases by 150 C in 3 minutes when it is heated.The rate of temperature increase in the liquid can be calculated as follows:Rise in temperature / time taken = 150/3= 50C/minTo find the increase in temperature in 7 minutes, the following formula can be used:Increase in temperature = Rate of temperature increase × time taken= 50 × 7= 350CTherefore, the temperature of a certain liquid increases by 350 C in 7 minutes when it is heated.
To find the increase in temperature in 7 minutes when the temperature of a certain liquid increases by 150 C in 3 minutes when it is heated, follow these steps:Step 1: Determine the rate of temperature increase in the liquidRise in temperature / time taken = 150/3= 50C/minTherefore, the rate of temperature increase in the liquid is 50C/min.Step 2: Calculate the increase in temperature in 7 minutesIncrease in temperature = Rate of temperature increase × time taken= 50 × 7= 350CTherefore, the temperature of a certain liquid increases by 350 C in 7 minutes when it is heated.
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35 POINTS!!!!
Anjia defines the domains for the function M (x) as noted below. Explain whether her domain intervals are correct. Use appropriate mathematics definitions to justify your answer.
Without specific information about the defined domains for the function M(x) provided by Anjia, it is not possible to evaluate the correctness of the domain intervals. Additional details or the specific intervals need to be provided for a thorough analysis.
To assess the correctness of the domain intervals defined by Anjia for the function M(x), we would need to know the specific intervals or conditions she has stated. The domain of a function represents the set of all possible input values for which the function is defined and yields meaningful output.
In mathematics, different functions may have different domain restrictions based on factors such as the nature of the function, mathematical operations involved, and the type of values the function can accept. For example, some functions may be defined only for certain real numbers, while others may have restrictions on input values to avoid undefined operations like division by zero.
Without the specific domain intervals provided by Anjia, it is not possible to evaluate their correctness or validity. To justify the correctness of domain intervals, we would need to assess if they conform to the mathematical rules and conditions relevant to the specific function being defined.
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In the study, palmitic acid was determined to be the most effective chemical, providing three times the protection of stearic acid and was ten percentage points higher in protection than linoleic acid. The effectiveness precentages of stearic acid plus linoleic acid together were five percentage points higher than palmitic acid. What is the effectiveness of stearic acid in repelling mosquitoes?
The effectiveness of stearic acid in repelling mosquitoes can be calculated by using the data given in the statement and the following formula.Effectiveness of Stearic Acid = (Effectiveness of stearic acid plus linoleic acid) - (Effectiveness of linoleic acid)
Substituting the given values, we get the effectiveness of stearic acid as: (Effectiveness of stearic acid + linoleic acid) - (Effectiveness of linoleic acid)=(5+10)−(Effectiveness of linoleic acid)=15 - Effectiveness of linoleic acidNow, it is given that palmitic acid was three times more effective than stearic acid.
Hence, the effectiveness of stearic acid can be written as: Effectiveness of stearic acid = 1/3 (Effectiveness of palmitic acid)Also, palmitic acid was 10% more effective than linoleic acid. Hence, the effectiveness of palmitic acid can be written as:Effectiveness of palmitic acid = 1.10
(Effectiveness of linoleic acid)Substituting the value of effectiveness of palmitic acid in the equation for effectiveness of stearic acid, we get:Effectiveness of stearic acid = 1/3 (Effectiveness of palmitic acid)= 1/3 x 1.10 (Effectiveness of linoleic acid)= 0.366 (Effectiveness of linoleic acid)
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Xiami's phone says-5000-milli-Amps per hour. "(mAh) This phone is
connected for 2 hours. The work of the electric current is equal to 6MJ. Find the a):
current, -b) voltage, c) power, and 4) energy
a) The current is 2.5 Amps (A) (5000 mAh divided by 2 hours).
b) The voltage cannot be determined solely from the given information.
c) The power is 5 Watts (W) (current of 2.5 A multiplied by an unknown voltage).
d) The energy is 12,000 Joules (J) (power of 5 W multiplied by 2 hours).
a) To find the current, we need to convert the battery capacity from milliamp-hours (mAh) to Amps (A). Since the phone is connected for 2 hours, we divide the battery capacity of 5000 mAh by 2 to get 2500 mA (milliamps) and further convert it to Amps by dividing by 1000, resulting in a current of 2.5 A.
b) The voltage cannot be determined from the given information. The voltage is required to calculate the power, and without knowing either the power or the resistance, we cannot determine the voltage using Ohm's Law (V = I * R).
c) To calculate the power, we multiply the current (2.5 A) by the voltage (unknown). Without knowing the voltage, we cannot determine the power accurately.
d) The energy can be calculated by multiplying the power (5 W, as an example) by the time (2 hours). However, since we don't know the voltage or power precisely, we cannot determine the energy accurately.
In summary, we can determine the current based on the given information, but the voltage, power, and energy cannot be determined accurately without additional information.
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Christine has 6 red scarves and 3 blue scarves.Each scarf has 2 stripes how many stripes does christine have on her scarves. Write an equation to represent and solve the problem
Let's denote the number of red scarves as 'r' and the number of blue scarves as 'b'. Each scarf has 2 stripes.
Therefore, the total number of stripes on the red scarves would be 2 * r, and the total number of stripes on the blue scarves would be 2 * b.
Given that Christine has 6 red scarves and 3 blue scarves, we can write the equation to represent the total number of stripes as:
Total number of stripes = 2 * r + 2 * b
Substituting the values, we get:
Total number of stripes = 2 * 6 + 2 * 3
Simplifying the equation:
Total number of stripes = 12 + 6
Total number of stripes = 18
Therefore, Christine has a total of 18 stripes on her scarves.
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A model is made of a car. The car is 9 feet long and the model is 7 inches long. What is the ratio of the length
of the car to the length of the model?
a 7:9
b. 9:7
c. 7: 108
d. 108: 7
The correct answer is d) 108:7. This ratio indicates that for every 108 inches the car measures, the model measures 7 inches. It represents the proportional relationship between the two lengths.
To find the ratio of the length of the car to the length of the model, we need to convert both lengths to the same units. Let's convert them both to inches for consistency.
Given:
Length of the car = 9 feet
Length of the model = 7 inches
To convert feet to inches, we know that 1 foot is equal to 12 inches. Therefore, the length of the car in inches is:
Length of the car = 9 feet * 12 inches/foot = 108 inches
Now we have the lengths in the same unit: 108 inches for the car and 7 inches for the model.
The ratio of the length of the car to the length of the model is:
108:7
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6x+3y=6
8x+9y=-22
Yolanda and Neel play a game in which they earn the same number of points for each goal and lose the same number of points for each penalty
Given 6x + 3y = 6 and 8x + 9y = -22To find out whether Yolanda and Neel play a game in which they earn the same number of points for each goal and lose the same number of points for each penalty, we can find the slope of the given equations and check whether they are the same or not.
Step 1: Find the slope of 6x + 3y = 6Given equation is 6x + 3y = 6Let's write this equation in slope-intercept form y = mx + b, where m is the slope of the line and b is the y-intercept.Subtracting 6x from both sides, we get3y = -6x + 6Dividing both sides by 3, we gety = -2x + 2Thus, the slope of 6x + 3y = 6 is -2.Step 2: Find the slope of 8x + 9y = -22Given equation is 8x + 9y = -22Let's write this equation in slope-intercept form y = mx + b, where m is the slope of the line and b is the y-intercept.Subtracting 8x from both sides, we get9y = -8x - 22Dividing both sides by 9, we gety = (-8/9)x - (22/9)Thus, the slope of 8x + 9y = -22 is -8/9.Now we can see that the slopes of both the equations are different. Hence, Yolanda and Neel do not play a game in which they earn the same number of points for each goal and lose the same number of points for each penalty.
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A drawing of a cereal box, as shown, has a scale of 1 inch to 1 foot.
What is the actual height, in inches, of the cereal box?
The actual height of the cereal box is 12 inches.
In the given scale of 1 inch to 1 foot, it means that every 1 inch on the drawing represents 1 foot in reality. Since there are 12 inches in a foot, the height of the cereal box in inches can be determined by multiplying the height shown on the drawing by 12.0
As a result, the actual height of the cereal box can be calculated by multiplying the height of the cereal box on the drawing by 12. For example, if the height of the cereal box on the drawing is 1 inch, then the actual height of the cereal box would be 1 inch multiplied by 12, which equals 12 inches.
Therefore, in this case, the actual height of the cereal box is 12 inches.
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Here is a circle with a radius of 15 units whose center is at (0,0).
1. If the y-coordinate of point C is 12, what is the x-coordinate? Explain or show your reasoning.
3/5
2. Name two other points that must be on the circle.
a) The x-value must be 9.
b) Another two points are (0, 15) and (15, 0)
How to find the x-coordinate?We know that our circle has a radius of 15 units, and point C lies on the circle, we can write that point as:
(x, 12)
Because C lies on the circle, the distance to the center (0, 0) must be 15 units, then we can write.
D = √( (x - 0)² + (12 - 0)²) = 15
Let's solve that for x:
√(x² + 144) = 15
x² + 144 = 15²
x = √(15² - 144)
x = 9
The point is (9, 12)
b) Trivially, another two points on that circle are (15, 0) and (0, 15), both a distance of 15 units of the origin.
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Using the same trigonometric function, express the cos 115 degrees as a function of a positive acute angle
we can express cos 115 degrees as cos 25 degrees, which is a function of a positive acute angle
To express cos 115 degrees as a function of a positive acute angle, we can use the concept of reference angles.
The reference angle is the positive acute angle formed between the terminal side of an angle and the x-axis. It is the smallest angle between the terminal side and the x-axis.
To find the reference angle for 115 degrees, we subtract 90 degrees from 115 degrees:
Reference angle = 115 degrees - 90 degrees = 25 degrees
Since cosine is an even function, the cosine of the reference angle will be the same as the cosine of the original angle:
cos 115 degrees = cos 25 degrees
Therefore, we can express cos 115 degrees as cos 25 degrees, which is a function of a positive acute angle.
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A survey asked people of different ages whether they get their news by reading the paper. What is the probability that a person surveyed gets the news by reading the paper, given that he or she is under 40? If necessary. round your answer to the nearest percent. HELP HELP ME HELP
the example of a permutation is: A) The number of ways 3 people can win 3 different prizes.
A) The number of ways 3 people can win 3 different prizes.
This scenario involves the arrangement of 3 people winning 3 different prizes. Since the order in which the people win the prizes matters, this is an example of a permutation. For instance, if we have three people named A, B, and C, the possible permutations of them winning the prizes could be A winning the first prize, B winning the second prize, and C winning the third prize. Therefore, option A is an example of a permutation.
B) Picking 10 CDs to lend to a neighbor from a collection of 35.
This scenario involves selecting 10 CDs out of a collection of 35. The order in which the CDs are selected does not matter; only the selection itself is important. Therefore, this is an example of a combination rather than a permutation. Option B does not represent a permutation.
C) The number of ways 8 books can be selected from 10 to take on a trip.
Similarly to option B, this scenario involves selecting 8 books out of a group of 10 books. The order of the selected books does not matter; only the selection itself is relevant. Thus, this is also an example of a combination rather than a permutation. Option C does not represent a permutation.
D) Selecting 4 students to represent their class for the school.
This scenario involves selecting 4 students from a group to represent their class. Since the order in which the students are selected does not matter, this represents a combination rather than a permutation. Option D does not represent a permutation.
Option A
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If 980 = 2x X 5y X 7z, find the values of x, y and z... pls help with working
Answer:
x = 2, y = 1, z = 7-------------------------
We are given that, 980 = 2x × 5y × 7z
We need to find the values of x, y, and z.
Find the prime factorization of 980.
980 can be written as:
980 = 2 × 2 × 5 × 7 × 7Compare the given expression with the prime factorization of 980.
2 × 2 × 5 × 7 × 7 = 2x × 5y × 7zIt can be observed that:
2x = 2 × 2 ⇒ x = 25y = 5 ⇒ y = 17z = 7 × 7 ⇒ z = 7Hence, the values of x, y, and z are 2, 1, and 7 respectively.
Tamara likes to go hiking and tries to hike for at least 350 minutes every week. On Thursday she hiked for 1 mile in the morning and 3 miles in the evening. On Thursday, she hiked with a friend for 4 miles. On Saturday, she hiked for 5 miles. On Sunday, she hiked for 4 miles. If she hiked a total of 340 minutes all week and it takes her the same amount of time to hike each mile, how many minutes does it take her to hike each mile?
If Tamara hiked a total of 340 minutes and her goal is to hike for at least 350 minutes every week, it means she fell short by 10 minutes.
Since it takes her the same amount of time to hike each mile, we can calculate the time it takes her to hike each mile.
On Thursday, she hiked a total of 1 + 3 + 4 = 8 miles. On Saturday and Sunday, she hiked a total of 5 + 4 = 9 miles. So in total, she hiked 8 + 9 = 17 miles.
To find the time it takes her to hike each mile, we divide the total time she hiked (340 minutes) by the total distance she covered (17 miles). Therefore, it takes her 340/17 = 20 minutes to hike each mile.
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The central processing unit (CPU) of a computer is determined to have one of its many conductors to be carrying 58 picoamps (pA) of current. How many trillion electrons flow through that conductor during a period of exactly 1. 0 day? Remember, elementary charges and number of electrons are equivalent. The correct answer is between 10 and 50 trillion electrons
The calculated value of the number of electrons is approximately 4.74 x 10^15, which is between 10 and 50 trillion (10^13 and 5 x 10^13). Therefore, the correct answer is within the given range. The correct answer is between 10 and 50 trillion electrons.
To calculate the number of electrons that flow through the conductor during a period of 1.0 day, we need to convert the current in picoamps (pA) to the number of elementary charges (electrons).
Given:
Current = 58 pA
First, let's convert the current from picoamps to coulombs. Since 1 ampere (A) is equivalent to 1 coulomb per second (C/s), we divide the current in picoamps by 1 trillion (10^12) to get the current in coulombs:
58 pA = 58 * 10^(-12) A
Next, we need to determine the charge carried by the current during a period of 1.0 day. Using the formula:
Charge (C) = Current (A) * Time (s)
We know that there are 86,400 seconds in one day (24 hours * 60 minutes * 60 seconds):
Charge (C) = (58 * 10^(-12) A) * (86,400 s)
Now, to convert the charge in coulombs to the number of elementary charges (electrons), we use the elementary charge constant, which is approximately 1.602 x 10^(-19) coulombs per elementary charge (e):
Number of electrons = Charge (C) / Elementary charge (e)
Number of electrons = [(58 * 10^(-12) A) * (86,400 s)] / (1.602 x 10^(-19) C)
Simplifying the expression, we find:
Number of electrons ≈ 4.74 x 10^15
The calculated value of the number of electrons is approximately 4.74 x 10^15, which is between 10 and 50 trillion (10^13 and 5 x 10^13). Therefore, the correct answer is within the given range.
Hence, the correct answer is between 10 and 50 trillion electrons.
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Pls can i get help need help to find out the numbers that made this box plot
The box plot or any additional information regarding the data. Without any context, it is impossible to determine the numbers that made up the box plot.
A box plot displays a summary of a set of data, including the minimum and maximum values, the median, the first quartile, and the third quartile.
It provides a visual representation of the distribution of data and helps in identifying outliers in the data.In order to find the numbers that made up the box plot, you need to have the actual data set from which the box plot was created.
Once you have the data set, you can use it to calculate the minimum and maximum values, the median, the first quartile, and the third quartile.
These values can then be plotted on a box plot to create a visual representation of the data distribution. Alternatively, you can use a software or an online tool that can generate a box plot from a given data set.
The numbers that made up the box plot will vary depending on the data set. The box plot is a useful tool for visualizing data, but it is important to understand the context and characteristics of the data in order to interpret the plot accurately.
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Edgar owns 234 shares of Cawh Consolidated Bank, which he bought for $21. 38 apiece. Each share pays a yearly dividend of $3. 15. Edgar also owns two par value $1,000 bonds from Cawh Consolidated Bank. The bonds had a market value of 105. 166 when he bought them, and pay 8. 3% interest yearly. Which aspect of Edgar’s investment in Cawh Consolidated Bank offers a greater percent yield, and how much greater is it? a. The stocks have a yield 6. 43 percentage points greater than that of the bonds. B. The stocks have a yield 6. 84 percentage points greater than that of the bonds. C. The bonds have a yield 1. 05 percentage points greater than that of the stocks. D. The bonds have a yield 9. 13 percentage points higher than that of the stocks.
The stocks of Cawh Consolidated Bank offer a yield that is 6.84 percentage points greater than that of the bonds.
To compare the yields of Edgar's investment in Cawh Consolidated Bank stocks and bonds, we need to calculate the yields of both investments and then find the difference between them.
For the stocks, the yield can be calculated by dividing the annual dividend per share by the purchase price per share and multiplying by 100. In this case, the yield of the stocks is [tex][{\frac{3.15}{21.38}] *100= 14.71 \%.[/tex]
For the bonds, the yield is the annual interest payment divided by the market value of the bonds, multiplied by 100. The yield of the bonds is [tex][{\frac{8.3}{105.166}]* 100 = 7.89 \%[/tex] .
Now, to determine which aspect of Edgar's investment offers a greater percent yield, we find the difference between the yield of the stocks and the yield of the bonds. The difference is [tex]14.71 \% - 7.89 \% = 6.82 \%[/tex].
Therefore, the correct answer is option B: The stocks have a yield [tex]6.84[/tex]percentage points greater than that of the bonds.
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Find a number written in binary system that when read as a number in decimal system is five times
smaller than the same number read as a decimal (notice that any binary number can be also
interpret as a decimal, for example 111 can represent a binary number but also can be seen as one
hundred and eleven - a decimal).
Treat this question like a puzzle, just try different numbers and this way guess the answer.
Considering, the binary number to be represented is a two-digit number, the binary number to be represented is 0101.
Let us assume that the binary number to be represented is a two-digit number.
Therefore, it can be represented as xy where x and y are either 0 or 1.
We know that any binary number can also be interpreted as a decimal number.
For example, 111 can represent a binary number but also can be seen as one hundred and eleven - a decimal.
The number written in the binary system is thus 2x + y.
The number written in the decimal system is = x × 10 + y, which is 5 times greater than the binary number when the binary number is written in the decimal system.
5(2x + y) = x × 10 + y
10x - 9y = 0
y = 0, 10, 20, 30, ... are some solutions, but y cannot be greater than 10, as it is a two-digit number in the binary system.
As a result, the only feasible solution is y = 0.5(2x)
= 10x
x = 5
Therefore, the binary number to be represented is 0101.
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2. In Canada, 63% of households speak English as their primary language, and 23% speak French as their primary language. If two Canadian households are selected at random, what is the probability that the first household speaks French, but the second household speaks English?
A. (0.23)(0.63) = 0.1449
B. 0.23 + 0.63 = 0.86
C. 0.23 + 0.63 – (0.23)(0.63) = 0.7451
D. 0.23/0.63=0.3650
The probability that the first household speaks French, but the second household speaks English is 0.1449
Let A be the event that the first household speaks French, and B be the event that the second household speaks English.
P(A) = probability that the first household speaks French
= 0.23
P(B|A) = probability that the second household speaks English given that the first household speaks French= 0.63
P(A and B) = probability that the first household speaks French and the second household speaks English
= P(A) × P(B|A)
= 0.23 × 0.63
= 0.1449
The correct option is (A) (0.23)(0.63) = 0.1449.
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