Therefore, Sarah has 20p left after paying for the fruit.
Sarah wants to buy 3 oranges at 30p each, which totals to 3 x 30p = 90p. She also wants to buy 1/2 kg of apples at £1.20 per kg, which is 0.5 kg x £1.20/kg = 60p. In total, the cost of the fruit is 90p + 60p = 150p.
Sarah has one 50p coin and six 20p coins, which amounts to 50p + (6 x 20p) = 170p.
To find out how much money Sarah has left, we subtract the cost of the fruit from the total amount of money she has.
170p - 150p = 20p
Therefore, Sarah has 20p left after paying for the fruit.
Learn more about subtraction here:
https://brainly.com/question/13619104
#SPJ11
Last night there were 100 people the attended the school play. There was a combination of adults and children that attended the event. Each child ticket cost $5 and each adult ticket cost $8. There was a total of $626 collected at the door. Write and solve a system of equations to find out how many children and how many adults attended the event
To find out how many children and how many adults attended the event, we can set up a system of equations based on the given information.
Let's use the variables c and a to represent the number of children and adults, respectively. The total number of people who attended the event is 100, and the total amount collected at the door is $626. Each child ticket costs $5, and each adult ticket costs $8. By setting up and solving a system of equations, we can determine the values of c and a.
Let c represent the number of children and a represent the number of adults who attended the event. We can set up the following system of equations based on the given information:
Equation 1: c + a = 100 (total number of people who attended the event)
Equation 2: 5c + 8a = 626 (total amount collected at the door)
We can solve this system of equations using various methods such as substitution, elimination, or matrix methods. Here, we'll solve it using the substitution method.
From Equation 1, we have c = 100 - a. Substitute this value into Equation 2:
5(100 - a) + 8a = 626
500 - 5a + 8a = 626
3a = 126
a = 42
Substitute the value of a into Equation 1:
c + 42 = 100
c = 58
Therefore, 58 children and 42 adults attended the event.
To learn more about variables click here:
brainly.com/question/15078630
#SPJ11
Solve the equation. Check the solution.start fraction lower t over 6 end fraction = 12
The solution to the equation start fraction lower t over 6 end fraction = 12 is lower t = 72. And, to check the solution we have substituted the value we got for lower t in the original equation and verified if it satisfies the equation or not.
The given equation is,start fraction lower t over 6 end fraction = 12To solve for the equation we have to first, cross-multiply both sides of the equation with 6. This will help us to get rid of the fraction.start fraction lower t over 6 end fraction = 12. Multiplying both sides by 6:lower t = 72The solution for the given equation is, lower t = 72.Now, we have to check whether the solution we found is correct or not. We can do this by substituting the value we got for lower t in the original equation.start fraction lower t over 6 end fraction = 12Putting the value of lower t, we get:start fraction 72 over 6 end fraction = 12. Simplifying this, we get:12 = 12.The value of lower t we found satisfied the original equation, therefore the solution is correct.
To know more about fraction, visit:
https://brainly.com/question/10354322
#SPJ11
if you used the common multiple from part a as the common denominator how would the models in the Example be different? How would they be the same?
In a fraction, the common denominator refers to the lowest common multiple of the denominators of the fractions. If you use the common multiple from part A as the common denominator, the models in the example will be different and at the same time the same.
A common multiple is the product of two or more factors that are common. In other words, it is a number that is a multiple of two or more integers.
Let's take an example of finding the common multiple of 6 and 8:
The multiples of 6 are: 6, 12, 18, 24, 30, 36, 42, 48, ...
The multiples of 8 are: 8, 16, 24, 32, 40, 48, ...
Therefore, the common multiples of 6 and 8 are: 24, 48, 72, 96, 120, 144, ...
The models would be different because the common denominator is the lowest common multiple of the denominators of the fractions. If we use the common multiple as the denominator, the size of the models may change.
Let's take an example:
Suppose we have two fractions, 1/2 and 2/3. The denominators are 2 and 3. The common multiple is 6.
If we use 6 as the common denominator, the fractions become:
1/2 = 3/6 (we multiplied the numerator and denominator by 3)
2/3 = 4/6 (we multiplied the numerator and denominator by 2)
The models would be different because the sizes are based on the denominators of the fractions. If we change the denominator, the size of the model may also change.
The models would be the same because they represent the same fractions.
Even though the size of the model may change, the fractions still represent the same value.
In the above example, 1/2 and 3/6 represent the same value, and 2/3 and 4/6 represent the same value.
Therefore, the models are still representing the same value even though they may be different in size.
To know more about multiple visit:
https://brainly.com/question/14059007
#SPJ11
Which shows one way the equation can be represented in words? z minus 6 = 1. 4 The difference of a number and z is the same as one and four-tenths. A number subtracted from one and four-tenths is equal to six. Six less than a number is the same as one and four-tenths. Six decreased by a number is equal to one and four-tenths.
The correct representation of the equation "z minus 6 = 1.4" in words is "The difference of a number and z is the same as one and four-tenths."
The equation "z minus 6 = 1.4" can be represented in words as "The difference of a number and z is the same as one and four-tenths." This representation accurately conveys the meaning of the equation.
Let's break down the equation to understand its components. "z minus 6" represents the difference between the number z and 6. The equal sign indicates that this difference is equal to "1.4", which means one and four-tenths.
Now let's analyze the answer choices:
"The difference of a number and z is the same as one and four-tenths." This choice correctly represents the equation, expressing that the difference between a number and z is equal to 1.4.
"A number subtracted from one and four-tenths is equal to six." This choice represents a different equation, where a number is subtracted from 1.4, resulting in six. It does not match the original equation.
"Six less than a number is the same as one and four-tenths." This choice represents a different equation, where six is subtracted from a number, resulting in 1.4. It does not match the original equation.
"Six decreased by a number is equal to one and four-tenths." This choice represents a different equation, where six is decreased by a number, resulting in 1.4. It does not match the original equation.
Learn more about equation at: brainly.com/question/29657983
#SPJ11
You buy two tickets to an escape room using a coupon for $5 off your entire purchase. You pay a total of $45. 15 which includes 7% sales tax. What is the original price of one ticket?
The original price of one ticket is $37.50.
The original price of one ticket as x.
A coupon for $5 off the entire purchase, the price after the coupon is the total price minus $5. So the price after the coupon is $45.15 - $5 = $40.15.
The price after the coupon includes 7% sales tax, up the equation:
(1 + 7%) ×x = $40.15
To calculate the 7% sales tax, $40.15 by 1.07:
$40.15 / 1.07 = $37.50
To know more about price here
https://brainly.com/question/12908368
#SPJ4
9. If a garden pea has 14 chromosomes before meiosis, how many
chromosomes would exist in each nucleus after meiosis 2? *
O a. 7
O b. 14
O c. 28
O d. 56
During meiosis, the number of chromosomes in each nucleus is reduced by half. Meiosis consists of two divisions: meiosis I and meiosis II. In meiosis I, the chromosome pairs separate, resulting in two cells with half the number of chromosomes as the original cell. I
n meiosis II, each of these cells further divides, resulting in a total of four cells.
Given that a garden pea has 14 chromosomes before meiosis, after meiosis I, each nucleus would contain 7 chromosomes. Then, in meiosis II, these cells undergo further division, resulting in four cells with the same number of chromosomes as after meiosis I, which is 7 chromosomes each.
Therefore, the answer is (a) 7 chromosomes.
To learn more about meiosis: -brainly.com/question/29383386
#SPJ11
devika pours 4.2 ounces of water from a full bottle she estimates that she poured out 35% of the water in the bottle about how much water was in the full bottle?
Devika poured out 4.2 ounces of water, which is approximately 35% of the water in the full bottle.
To find out how much water was in the full bottle, we can set up a proportion.
Let x represent the amount of water in the full bottle (in ounces). We know that 4.2 ounces is 35% of x.
We can set up the proportion:
4.2 / x = 35 / 100
To solve for x, we can cross-multiply:
4.2 * 100 = 35 * x
420 = 35x
Dividing both sides of the equation by 35:
420 / 35 = x
12 = x
Therefore, there were approximately 12 ounces of water in the full bottle.
So, Devika estimated that she poured out about 35% of the water in the full bottle, which corresponds to approximately 4.2 ounces.
Learn more about water here
https://brainly.com/question/29291605
#SPJ11
The function h(x) is defined as shown.
h(x) = StartLayout Enlarged left-brace 1st row 1st column x + 2, 2nd column x less-than 3 2nd row 1st column negative x + 8, 2nd column x greater-than-or-equal-to 3 EndLayout
What is the range of h(x)?
Selected:a. –[infinity] < h(x) < [infinity]This answer is incorrect.
b. h(x) ≤ 5
c. h(x) ≥ 5
d. h(x) ≥ 3
The function h(x) is defined as shown below:
[tex]$$h(x) = \begin{cases} x+2, & \text{if }x <3 \\ -x+8, & \text{if }x\ge3 \end{cases}$$[/tex]
So, option A is the correct answer.
To find the range of h(x), we will analyze the value of h(x) at different values of x. We will start with values less than 3 and then move to values greater than or equal to 3.
Case 1: x < 3 For values of x less than 3, h(x) is given by:
h(x) = x + 2
For minimum value of x (approaching negative infinity), h(x) approaches negative infinity.
For maximum value of x (approaching 3 from left), h(x) approaches 5. So, the range of h(x) for x < 3 is:
-∞ < h(x) <5 Case 2: x ≥ 3
For values of x greater than or equal to 3, h(x) is given by:
h(x) = -x + 8
For minimum value of x (approaching 3 from right), h(x) approaches 5.
For maximum value of x (approaching infinity), h(x) approaches negative infinity.
So, the range of h(x) for x ≥ 3 is: 5 ≤h(x) <∞
Therefore, the range of h(x) is: -∞ < h(x) < ∞
This is equivalent to option A. So, option A is the correct answer.
Note: When the range of a function is the set of all real numbers, we can also represent it as "(-∞, ∞)" or "ℝ".
To know more about maximum visit
https://brainly.com/question/16696252
#SPJ11
Calculate a 15% tip for a restaurant bill of $42.40. Remember to make sure that your answer is reasonable.
To calculate a 15% tip for a restaurant bill of $42.40, we multiply the bill amount by 0.15 to find the tip amount. The result will provide the tip amount, which can be added to the bill to get the total amount to pay. Therefore, a 15% tip for a restaurant bill of $42.40 is $6.36.
To calculate a 15% tip, we take 15% of the bill amount. The tip amount is found by multiplying the bill amount by the decimal equivalent of 15%, which is 0.15.
Given the restaurant bill of $42.40, we can find the tip amount by performing the calculation: $42.40 * 0.15 = $6.36.
Therefore, a 15% tip for a restaurant bill of $42.40 is $6.36.
To check if the answer is reasonable, we can consider the percentage amount and the total bill. A 15% tip is generally considered an average or moderate tip amount. Given the bill of $42.40, a tip of $6.36 seems reasonable in relation to the bill total.
However, tipping customs may vary in different regions or based on personal preferences. It is always advisable to consider the overall service quality and local tipping practices when determining an appropriate tip amount.
Learn more about decimal equivalent here:
https://brainly.com/question/28517838
#SPJ11
Andrew dropped a rock from a cliff 49 meters high. The function
h(t)=−4.9t^2+49
represents the height of the rock, in meters, t seconds after he dropped it. Approximately how many seconds did the rock take to reach the ground?
To find approximately how many seconds the rock took to reach the ground, we need to determine when the height, h(t), becomes zero.
Setting h(t) = 0 in the equation -4.9t^2 + 49 = 0, we can solve for t.
-4.9t^2 + 49 = 0
4.9t^2 = 49
t^2 = 49 / 4.9
t^2 = 10
t ≈ √10
Therefore, the rock took approximately √10 seconds to reach the ground.
learn more about:- seconds here
https://brainly.com/question/24237610
#SPJ11
The price of everything in the store is reduced by 1/4 each hour until closing time. Liz wants to purchase a shirt that was originally marked at 24$. You can use a function to describe the shirts price x hours after the sale starts.
Someone help me do this
Answer:
I believe it's A
Step-by-step explanation:
Prove that the line joining the midpoint of a median to a vertex of the triangle trisects
the side opposite the vertex considered.
The line joining the midpoint of a median to a vertex of a triangle trisects the side opposite the vertex considered.
Let's consider a triangle ABC with median AD and midpoint M of AD. We want to prove that line BM trisects the side AC at point N.
To prove this, we can use the following steps:
Draw line BM and extend it to meet side AC at point N.
Since M is the midpoint of AD, we have AM = MD.
By the midpoint theorem, we also know that BM is half of AD, so BM = MD.
Therefore, we have AM = MD = BM.
We also know that triangles ABM and NBC are similar by angle-angle similarity, since they share angle B and have angles ABD and CBN that are alternate interior angles.
This means that the corresponding sides are proportional, so we have: AB/BM = BN/NC AB/MD = BN/NC (substituting BM=MD)
Multiplying both sides by 2, we get: AB/AD = 2BN/NC
Since AD is a median, we know that AB/AD = 1/2.
Substituting this into equation from step 7, we get: 1/2 = 2BN/NC
Solving for BN, we get: BN = NC/2.
This shows that line BM trisects side AC at point N.
Therefore, we have proved that the line joining the midpoint of a median to a vertex of a triangle trisects the side opposite the vertex considered.
Learn more about median here
https://brainly.com/question/26177250
#SPJ11
The boxandwhisker plots below represent the scores for pre and postwritten tests for applicants obtaining their driver’s licenses. A passing score is 70%. Which of the following is best supported by the information in the graphs? A. Exactly 25% more applicants passed the posttest than the pretest. B. Exactly 50% more applicants scored below the passing score on the pretest than on the posttest. C. Of all the applicants that passed the pretest, only 25% scored higher than a 90. D. Of all the applicants that passed the posttest, only 50% scored between a 70 and an 80.
A water pump can pump 13.2 gallons of water in a pool every minute how much water will be remove in 15 minutes
In 15 minutes, a water pump capable of pumping 13.2 gallons of water per minute will remove a total of 198 gallons of water from the pool.
If a water pump can pump 13.2 gallons of water in a pool every minute, we can calculate the amount of water it will remove in 15 minutes by multiplying the pumping rate by the duration. Therefore, 13.2 gallons/minute x 15 minutes = 198 gallons. During the 15-minute period, the water pump will continue to operate at a constant rate, removing water from the pool. Each minute, 13.2 gallons of water will be pumped out. When we multiply this rate by the duration of 15 minutes, we find that a total of 198 gallons of water will be removed from the pool. It's important to note that this calculation assumes a constant pumping rate without any interruptions or changes in efficiency.
learn more about efficiency here: brainly.com/question/10478611
#SPJ11
if the division expression is 7 divided into 3 what is the unit form
The division expression is 7 divided into 3 which can be represented in unit form as follows; 7 ÷ 3 = 2 R1, this means that 7 divided by 3 equals 2, with a remainder of 1.
The remainder is the value left after an integer has been divided by a divisor, such as the number left over after a long division of 7 ÷ 3. Therefore, the value of circle plus circle is given by the formula: $$\text{Circle plus Circle} = πr_1^2 + πr_2^2$$ where r1 and r2 are the radii of the two circles respectively. If the values of the radii are provided, then we can substitute them in the above formula to find the value of circle plus circle.
The area of a circle is given by the formula A = πr² where A is the area of the circle and r is the radius. Therefore, the formula for the value of circle plus circle is given by Circle plus Circle = πr1² + πr2² where r1 and r2 are the radii of the two circles respectively. As we already know that a circle is a geometric figure having no end. It has many properties. One of its properties is that its area can be measured. When we talk about the area of a circle, we are referring to the region enclosed by it. The area of a circle is given by the formula: A = πr², where A is the area of the circle and r is its radius. The symbol π represents the constant pi, which is approximately equal to 3.14. Therefore, the area of a circle is proportional to the square of its radius. If we have two circles with radii r1 and r2, then the area of the first circle is given by A1 = πr1², and the area of the second circle is given by A2 = πr2².
To know more about represented visit:
https://brainly.com/question/31291728
#SPJ11
A one-kilogram cake is divided into 3 pieces whose weights are in the ratio 1:2:4. What is the weight of the second piece?
EXPLANATION ALONG WITH ANSWER NEEDED. Wrong answers and answers without explanation- will be reported.
Considering the ratio provided for cake pieces, the weight of the second piece of the cake is 2/7 kilograms.
Given that a one-kilogram cake is divided into 3 pieces whose weights are in the ratio 1:2:4.
We have to find the weight of the second piece.
Steps to find the weight of the second piece
Step 1: Let the three parts of the cake be x, 2x, and 4x respectively, where x is the weight of the first part of the cake.
Step 2: Find the total weight of the cake:
x + 2x + 4x = 7x
Total weight of cake = 7x
Total weight of cake = 1kg
Therefore,
7x = 1 kg
Or x = 1 / 7 kg.
Step 3: Find the weight of the second part of the cake (2x):
Weight of the second part of the cake = 2x
= 2 × (1 / 7)
= 2 / 7 kg.
Weight of the second part of the cake is 2/7 kilograms.
To conclude, the weight of the second piece of the cake is 2/7 kilograms.
To know more about ratio, visit:
https://brainly.com/question/13419413
#SPJ11
3a) Write the simplified expression for the area of the shape below.*
1point
The simplified expression for the area of the shape is 8x square units.
In the given figure of rectangle,
Given that,
Length of rectangle = 2x
And width of rectangle = 4
Since we know that,
Rectangles are four-sided polygons with all internal angles equal to 90 degrees. At each corner or vertex, two sides meet at right angles. The rectangle differs from a square in that its opposite sides are equal in length.
We also know that,
Area of rectangle = length x width
= (2x)(4)
= 8x
Hence expression of area = 8x square units.
Learn more about the rectangle visit:
https://brainly.com/question/2607596
#SPJ4
The complete question is attached below:
Trigonometry Pile Up!
How long is this side?
1.7 cm
71
21
1.7 cm
2.2 cm
4.3 cm
53
377
2.1 cm
42
3.2 cm
3.8 cm
3.6 cm
2.9 cm
2.5 cm
34
8 cm
The given options are 1.7 cm, 71, 21, 1.7 cm, 2.2 cm, 4.3 cm, 53, 377, 2.1 cm, 42, 3.2 cm, 3.8 cm, 3.6 cm, 2.9 cm, 2.5 cm, 34, and 8 cm.
The summary of the answer is that the length of the side is 2.2 cm.
In trigonometry, it is common to use the concept of a right triangle to relate the lengths of its sides with the trigonometric functions. However, without additional context or information about the triangle or the specific problem, it is not possible to determine the length of the side accurately.
Among the given options, the length of the side closest to 2.2 cm is 2.2 cm itself. Therefore, based on the options provided, we can conclude that the length of the side is 2.2 cm. However, it is important to note that without further information or context, this is an assumption based solely on the given options and may not be the correct answer in a different context or problem.
Learn more about trigonometry here :
https://brainly.com/question/12068045
#SPJ11
Karla stands 13. 5 meters from the base of a tree and notices that the top of her
shadow lines up with the tip of the tree's shadow, 6. 2 meters away. Karla is 1. 6
meters tall. How tall is the tree to the nearest 0. 1 meter? (Just put the number)
1. 6m
6. 2 m
13. 5 m
The tree is approximately 10.3 meters tall. The distance between Karla's shadow and the tree's shadow is 6.2 meters.
Let's use similar triangles to solve this problem. We have two triangles: one formed by Karla, her shadow, and the distance between her and the tree; and the other formed by the tree, its shadow, and the distance between the tree and Karla.
Let's call the height of the tree "h." According to the given information, Karla's height is 1.6 meters, and the distance between Karla and the tree is 13.5 meters.
Using the concept of similar triangles, we can set up the following proportion:
h/1.6 = (h + 6.2)/(13.5)
Cross-multiplying and solving for "h," we get:
13.5h = 1.6(h + 6.2)
13.5h = 1.6h + 9.92
11.9h = 9.92
h ≈ 9.92/11.9
h ≈ 0.8336
Rounding to the nearest 0.1 meter, the height of the tree is approximately 10.3 meters.
Learn more about meters here: brainly.com/question/372485
#SPJ11
An engineer is designing a storage compartment in an aircraft. The compartment's volume is 72 cubic meters. The width is 2 meters longer than the length. The height is 1 meter less than the length. Find the dimensions of the compartment.
An engineer is designing a storage compartment in an aircraft. The compartment's volume is 72 cubic meters. The width is 2 meters longer than the length. The height is 1 meter less than the length. the dimensions of the compartment are 4m × 6m × 3m.
Find the dimensions of the compartment. Solution:The volume of a rectangular prism is given by;[tex]`V= l × w × h`[/tex] Given that the compartment's volume is 72 cubic meters, let's substitute[tex]`V = 72`[/tex]
cubic meters;[tex]`l × w × h = 72`[/tex]
We also know that;[tex]w = l + 2h = l - 1[/tex]
Substituting w and h in terms of l, we get;[tex]`l(l+2)(l-1) = 72`[/tex]Expanding,
we get;[tex]`l(l²-1) + 2(l²-1) = 72`[/tex]
Simplifying, we get;[tex]`l³ + l² - 2l - 74 = 0`[/tex]
We will use trial and error method to find one of the roots,`l= 4`.
By substitution, we get;[tex]w = 4 + 2 = 6m h = 4 - 1 = 3m[/tex]
Thus, the compartment dimensions are 4m × 6m × 3m. The width is 6 meters, the length is 4 meters, and the height is 3 meters.
To know more about rectangular visit:
https://brainly.com/question/21416050
#SPJ11
Las aspas de un ventilador de techo están girando alrededor de un eje fijo estas parten del reposo con aceleración angular constante en un tiempo están girando 10 revoluciones por segundo y dan 60 vueltas después Irán a 15 revoluciones por segundo
The question provides that the blades of a ceiling fan rotate around a fixed axis and begin to rotate with a constant angular acceleration such that they are rotating at 10 revolutions per second after a certain period of time.
After 60 turns, the fan will be rotating at 15 revolutions per second.
Solution:The given data is:Initial angular speed, ω₁ = 0 (since they start from rest)
Final angular speed, ω₂ = 15 revolutions/sec
Angular acceleration, α = constant
Number of revolutions for the first part, n₁ = 60
Number of revolutions for the second part, n₂ = (total revolutions) - (n₁) = (60 + 10) - 60 = 10 revolutions
Using the formula for the angular velocity, ω = ω₀ + αt
and the formula for the number of revolutions, n = ωt / 2π
We can find out the time required to reach a final speed of 15 rev/s as follows:15 = 0 + αt ⇒ t = 15 / α
The total time required to reach a speed of 15 rev/s would be the sum of the time required to reach a speed of 10 rev/s and the time required to reach 15 rev/s.t = t₁ + t₂ ⇒ t₂ = t - t₁
We can find the value of t₁ from the formula for the number of revolutions during the first part of the motion as follows:n₁ = ω₁t₁ / 2π0 = αt₁² / 2 + ω₁t₁ / 2π ⇒ t₁ = 0
Using the formula for the number of revolutions, we can find the value of t₂ as follows:n₂ = (ω₁t₂ + 1/2 αt₂²) / 2π ⇒ t₂ = 20/α
The value of α can be found by equating the two formulas for t₂ obtained above:
20/α = 15 / α + t₁⇒ α = 100 / 3 rad/s²
We can now substitute this value in the formulas for t and t₂ to find the times required to reach speeds of 10 and 15 rev/s respectively.t₁ = 0 s, t₂ = 60 / 3 = 20 s
Answer: The time required for the blades of the ceiling fan to rotate with a constant angular acceleration before rotating at 10 revolutions per second is 0 seconds and the time required to reach a speed of 15 revolutions per second is 20 seconds.
To know more about acceleration, visit
https://brainly.com/question/2303856
#SPJ11
How many moles of aluminum oxide are needed to react with fluorine to produce 12. 52 moles of aluminum fluoride?
mol Al2O3
Given,Number of moles of Aluminum fluoride = 12.52 mol AlF3The chemical equation of the reaction between aluminum oxide and fluorine is given by;
2Al2O3 + 6F2 → 4AlF3 + 3O2From the balanced equation above; 2 moles of Al2O3 will produce 4 moles of AlF3Hence, 1 mole of Al2O3 will produce 4/2 = 2 moles of AlF3Number of moles of Aluminum oxide needed to react with fluorine to produce 12.52 moles of aluminum fluoride = 12.52/2 = 6.26 moles Therefore, more than 250 moles of aluminum oxide are needed to react with fluorine to produce 12.52 moles of aluminum fluoride.
To know more about moles visit:
https://brainly.com/question/15209553
#SPJ11
A space vehicle is orbiting Earth in a circular orbit. What radian measure corresponds to (a) 2. 5 orbits? (b) 3/2 orbit?
a) The radian measure is 5π radians.
b) The radian measure is (3πr)/2 radians.
To determine the radian measure corresponding to a certain number of orbits in a circular orbit, we need to know the circumference of the orbit.
The circumference of a circle is given by the formula C = 2πr, where C represents the circumference and r represents the radius.
Let's assume the radius of the circular orbit is denoted by "r."
(a) To find the radian measure for 2.5 orbits:
The total angle covered in 2.5 orbits is equivalent to 2.5 times the full circumference of the orbit.
Angle = 2.5 * (2πr) = 5πr
Therefore, the radian measure corresponding to 2.5 orbits is 5π radians.
(b) To find the radian measure for 3/2 orbit:
The total angle covered in 3/2 of an orbit is equivalent to (3/2) times the full circumference of the orbit.
Angle = (3/2) * (2πr) = 3πr/2
Therefore, the radian measure corresponding to 3/2 of an orbit is (3πr)/2 radians.
To learn more about radian here:
https://brainly.com/question/28990400
#SPJ4
What score must a learner earn on the ACT composite test in order for the score to be at the 87.49th percentile? Round up to the nearest whole number.
Many students take standardized tests for college applications. They are called standardized tests because they are scored so the population of student scores for any one particular test follows a normal distribution. The most common test are the SAT and the ACT.
Suppose the mean and standard deviation for the ACT composite score, the SAT critical reading score, and the SAT mathematics score for the year 2017 are as follows:
For the ACT, the mean composite score was 21.0 with a standard deviation of 5.2.
For the SAT critical reading score, the mean was 501 with a standard deviation of 112.
For the SAT mathematics score, the mean was 516 with a standard deviation of 116
a. 32
b. 43
c. 27
d. 19
Answer:
27
Step-by-step explanation:
You want to know the ACT composite test score for the 87.49th percentile, given the ACT scores have a mean of 21.0 and a standard deviation of 5.2.
Z-scoreThe Z-table in the first attachment shows you the Z-value of the 87.49th percentile is 1.10+0.05 = 1.15.
ScoreThe corresponding score is ...
X = μ +σZ
X = 21.0 +5.2·1.15 ≈ 27
A learner must earn a score of 27 to be at the 87.49th percentile on the ACT composite test.
<95141404393>
In the funtion f(x)=1/x which of these could be a value of f(x) when x is close to zero
In the function f(x) = 1/x, when x is close to zero, the value of f(x) approaches positive or negative infinity. As x approaches zero from the positive side (x → 0+).
The function f(x) = 1/x becomes increasingly large and approaches positive infinity. This is because dividing a positive number by a very small positive number yields a very large positive result.
On the other hand, as x approaches zero from the negative side (x → 0-), the function f(x) = 1/x also becomes increasingly large but in the negative direction, approaching negative infinity. Dividing a negative number by a very small negative number yields a very large negative result.
However, it is important to note that the function f(x) = 1/x is undefined at x = 0 since division by zero is undefined in mathematics. Therefore, we say that the function has a vertical asymptote at x = 0, meaning that the function gets arbitrarily close to positive or negative infinity as x approaches zero, but it never actually reaches zero. In conclusion, when x is close to zero in the function f(x) = 1/x, the value of f(x) could be positive or negative infinity depending on whether x approaches zero from the positive or negative side, respectively.
Learn more about negative infinity here:- brainly.com/question/24224719
#SPJ11
Un arquitecto diseña el arco principal de la nave de una iglesia en forma de una semicircunferencia (180°), con un radio de 2.5m ¿Qué longitud debe tener ese arco a construir?
Based on the above, the length of the arch should be approximately 7.85 meters.
What is the arch?To know the length of the arch, one need to calculate the circumference of the semicircle.
The circumference of a full circle is: C = 2πr
Note that the semicircle is (180°), so one need to divide the circumference by 2 to get the length of the arch:
Length of the arch = C/2 = (2πr)/2 = πr
Given the radius (r) of 2.5m, one need to substitute the value into the formula:
Length of the arch = π × 2.5
= 3.14 × 2.5
=7.85 meters
Therefore, the architect should build the arch with a length of about 7.85 meters.
Learn more about arch from
https://brainly.com/question/28108430
#SPJ4
See text below
An architect designs the main arch of the nave of a church in the shape of a semicircle (180°), with a radius of 2.5m. How long should that arch be built?
Wallace works at the Computer Wholesale Warehouse, where he develops visual impressions of products for advertisements and marketing materials. What type of work does Wallace perform
The required, Wallace performs graphic design work at the Computer Wholesale Warehouse.
Based on the description provided, Wallace performs visual design or graphic design work at the Computer Wholesale Warehouse. He develops visual impressions of products for advertisements and marketing materials. This involves creating visual elements, such as graphics, images, and layouts, to effectively convey messages and promote products.
Wallace's role at the Computer Wholesale Warehouse involves performing visual design work to create captivating visual impressions of products for advertisements and marketing materials, contributing to the overall effectiveness of their promotional efforts.
Thus, the required, Wallace performs graphic design work at the Computer Wholesale Warehouse.
Learn more about advertising here:
https://brainly.com/question/31561378
#SPJ4
On average, seawater in the world oceans has a salinity of about 3. 5%. Chapter Reference Hint b How much seawater need to have evaporated to leave 100g salt?.
Average seawater salinity = 3.5%100g of salt has been left after seawater has evaporatedThe mass of salt dissolved in 100g of seawater will be 3.5g (since salinity is 3.5%)Let x be the mass of seawater that needs to be evaporated to leave 100g of salt.
According to the law of conservation of mass,Mass of salt in the solution before = Mass of salt in the solution afterTherefore, 100g of salt that has been left after evaporation was originally dissolved in x grams of seawater.
Therefore, the mass of salt in that seawater would have been 3.5% of x.Using the above information, we can write an equation as follows:0.035x = 100g Therefore, about 2857.14 g or 2.85714 kg of seawater needs to have evaporated to leave 100 g of salt.
To know more about Average seawater visit :
https://brainly.com/question/32267736
#SPJ11
The line of best fit can be represented by the equation y=−6x+97, where x represents the number of absences and y represents the final grade.
The line of best fit is a straight line that best fits the scattered data points on a scatterplot. It is represented by the equation y = mx + b, where m is the slope of the line and b is the y-intercept.
In this particular case, the equation of the line of best fit is y = -6x + 97, where x represents the number of absences and y represents the final grade.
This means that for every additional absence a student has, their final grade is expected to decrease by 6 points. The y-intercept of 97 means that if a student had zero absences, their predicted final grade would be 97.
It is important to note that the line of best fit is a prediction, and not a definitive statement about the relationship between the variables. While it can provide some insight into the relationship between the number of absences and final grade, there may be other factors that are not taken into account by the model.
Additionally, the equation of the line of best fit is only valid within the range of the data used to create the model. Extrapolating beyond this range may not produce accurate predictions.
Overall, the line of best fit is a useful tool for analyzing relationships between variables, but it should be used with caution and in conjunction with other analyses to get a complete understanding of the relationship between variables.
To know more about straight line visit:
https://brainly.com/question/31693341
#SPJ11
