Zoë has 2 times as much money as her brother now. Answer: Zoë has twice as much money as her brother.
Let's find out how much money Zoë had to begin with if she spent 1/3 of her money on a new CD player.Suppose Zoë's brother had $x. Since Zoë had 3 times as much money as her brother, she had $3x to begin with.She spent 1/3 of her money on a new CD player.1/3 of $3x = $xZoë now has $2x remaining after buying the CD player.Since $2x is twice the amount of money her brother has ($x), Zoë has twice as much money as her brother after buying the CD player.
Therefore, Zoë has 2 times as much money as her brother now. Answer: Zoë has twice as much money as her brother.
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Brandon is running errands for his mother. It is 1 4 mile from his house to the library and 2 3 mile from the library to the grocery store. Brandon claims that he walks a total of 11 12 mile if he goes from his house to the library to the grocery store. Which of the following shows whether Brandon is correct and why? A. Yes; the correct distance is 11 12 mile, because 1 4 2 3 = 3 12 8 12 = 11 12. B. No; the correct distance is 10 12 mile, because 1 4 2 3 = 4 12 6 12 = 10 12. C. No; the correct distance is 1 mile, because 1 4 2 3 = 4 12 8 12 = 12 12 = 1. D. No; the correct distance is 1 1 12 miles, because 1 4 2 3 = 4 12 9 12 = 13 12 = 1 1 12.
The correct answer is D. No; the correct distance is 1 1/12 miles, because 1/4 + 2/3 = 4/12 + 8/12 = 12/12 = 1 1/12.
To solve this problem, we first need to convert the mixed numbers to fractions. 1 4 = 4 12 and 2 3 = 8 12. Then, we can add the fractions together. 4 12 + 8 12 = 12 12 = 1 1 12.
Therefore, Brandon is incorrect. He walks a total of 1 1/12 miles, not 11 1/2 miles.
At sea level, the air presses down on our bodies at 14.7
pounds per square inch (psi). When diving in the ocean,
the pressure increases. The equation y = 0.445x + 14.7,
where x is the number of feet a diver descends, represents
this situation.
a. Explain using the definition how you know the
relationship represented by the equation is a function.
We can conclude that the relationship represented by the given equation is a function. Moreover, the pressure increases as the diver descends below sea level, which is shown by the positive slope (0.445) of the equation.
The equation y = 0.445x + 14.7 represents a situation where a diver descends below sea level. This equation gives the pressure (y) of the water at a depth of x feet below sea level. Here, y is dependent on x. It means that the pressure at a given depth is dependent on that particular depth. Therefore, we can say that the given equation represents a function because for each value of x, there is only one corresponding value of y.
A function is defined as a relation that maps each input value (x) to exactly one output value (y). In other words, it is a set of ordered pairs (x, y), where each value of x is paired with a unique value of y. The equation given above satisfies this definition of a function because it represents a one-to-one relationship between the depth (x) and the pressure (y) of the water.
Therefore, we can conclude that the relationship represented by the given equation is a function. Moreover, the pressure increases as the diver descends below sea level, which is shown by the positive slope (0.445) of the equation.
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Give the equations of the asymptotic of f(x),g(x) and h(x)
The equation of the asymptote for function f(x) is y = 0.
The equation of the asymptote for function g(x) is x = a, where a is a constant.
The equation of the asymptote for function h(x) is y = mx + b, where m and b are constants.
For function f(x), the asymptote is y = 0 since the function approaches zero as x approaches positive or negative infinity.
For function g(x), the asymptote is a vertical line at x = a. This occurs when the function approaches a specific x-value but does not cross it.
For function h(x), the asymptote is a straight line represented by y = mx + b. This occurs when the function approaches a linear relationship as x approaches positive or negative infinity. The values of m and b depend on the slope and y-intercept of the asymptote, respectively.
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The length of a rectangle is represented by 2n+8, and its width is represented by n-7. Write the polynomial for the perimeter of the rectangle. Write your answer in standard form.
The polynomial for the perimeter of the rectangle can be expressed as P(n) = 2(2n+8) + 2(n-7), which simplifies to P(n) = 4n + 16 + 2n - 14.
Combining like terms, we get P(n) = 6n + 2. Therefore, the polynomial in standard form for the perimeter of the rectangle is P(n) = 6n + 2.
To find the perimeter of the rectangle, we need to add up the lengths of all four sides. The length of the rectangle is represented by 2n+8, so we have 2 sides of length (2n+8). The width of the rectangle is represented by n-7, so we have 2 sides of length (n-7). To calculate the perimeter, we add up the lengths of all four sides: (2n+8) + (2n+8) + (n-7) + (n-7). Simplifying this expression, we get 6n + 2, which is the polynomial in standard form for the perimeter of the rectangle.
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Convert. If necessary, round to the nearest tenth.
(Recall: 1 gal. = 3.79 L.)
Igal. x 20 L.
a. 10.5
b. 5.8
C.
10.1
d.
5.3
Therefore, the answer rounding to the nearest tenth is d. 5.3.
To convert 1 gallon to liters, we multiply by the conversion factor of 3.79 L/gal.
1 gal. * 3.79 L/gal = 3.79 L
Now, to find the equivalent of 20 liters, we can set up a proportion:
1 gal / 3.79 L = x gal / 20 L
Cross-multiplying and solving for x, we get:
x = (1 gal / 3.79 L) * 20 L = 20 / 3.79 gal
Rounding to the nearest tenth, we have:
x ≈ 5.3
Therefore, the answer is d. 5.3.
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Calvin wants to sell a basic badminton kit to his friends. In that kit, he puts two rackets worth ₹140₹140₹, 140 each and a shuttlecock worth ₹80₹80₹, 80. He wants to have a profit of 25\%25%25, percent?
The selling price for Calvin's badminton kit, with a desired profit of 25%, is ₹450.
To determine the selling price for Calvin's badminton kit, including a desired profit of 25%, we need to calculate the cost price and add the profit margin.
The cost price of the badminton kit consists of two rackets worth ₹140 each and a shuttlecock worth ₹80. Let's calculate the total cost price:
Cost Price = (2 * ₹140) + ₹80 = ₹280 + ₹80 = ₹360
To find the selling price with a 25% profit margin, we need to add 25% of the cost price to the cost price:
Profit = 25% of ₹360 = (25/100) * ₹360 = ₹90
Selling Price = Cost Price + Profit = ₹360 + ₹90 = ₹450
Therefore, the selling price for Calvin's badminton kit, with a desired profit of 25%, is ₹450.
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How do you find the hight of the equation v=pi*r^2*h/3
The formula of height h = (3v) / (π * r^2)To find the height (h) of a cone given the volume (v) and the radius of the base (r), we can rearrange the equation v = (π * r^2 * h) / 3.
By multiplying both sides by 3 and dividing by π * r^2, we isolate the variable h and obtain the formula h = (3v) / (π * r^2). Substituting the appropriate values for volume and radius into this equation allows us to calculate the height of the cone.
To solve for the height (h) in the equation v = (π * r^2 * h) / 3, we first multiply both sides by 3 to eliminate the fraction. This results in the equation 3v = π * r^2 * h. Next, we isolate the variable h by dividing both sides of the equation by π * r^2, giving us the formula h = (3v) / (π * r^2). By substituting the known values for volume (v) and radius (r) into this equation, we can calculate the height (h) of the cone. It is important to ensure that the units for volume and radius are consistent and compatible to obtain the correct result.
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Quadrilateral ABCD is congruent to quadrilateral
AMCG. Determine mZDAB.
12 cm
M
28
620
C
А
B
13 су
10 cm
16 cm
810
D
To determine the measure of angle DAB, we need to use the congruence of quadrilaterals ABCD and AMCG.
Quadrilateral ABCD is congruent to quadrilateral AMCG.
Since the two quadrilaterals are congruent, their corresponding angles are equal. Therefore, we can write:
m∠DAB = m∠MAC
However, the measure of angle MAC is not given in the given information. Therefore, without additional information, we cannot determine the exact measure of angle DAB.
The options provided in the question do not correspond to the measure of angle DAB. Therefore, the correct answer cannot be determined based on the given information.
It is important to have additional information about the measures of angles or the side lengths in order to determine the measure of angle DAB accurately.
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1) What is the formula used to
find the volume of a cylinder?
2)What is the difference
between the volumes of the
Chunky Chicken Noodle Soup
can and the Condensed
Chicken Noodle Soup can?
"Use 3. 14 for pi in all calculations
"You must show what you multiplied to find
the volumes of both cans AND the difference
between the two volumes.
"Remember to label your answers
cm
Answer:
for 1.
Step-by-step explanation:
the formula is pir2h
Which fractions are equivalent?
26 and 12
14 and 36
26 and 14
12 and 24
To find which fractions are equivalent, we need to simplify each fraction. the fractions that are equivalent are 12/24 and 1/2.
The fractions 26/12 and 14/36 cannot be simplified since both already are in their simplest form. Hence 26/12 and 14/36 are not equivalent.14 and 36The fractions 26/12 and 14/36 cannot be simplified since both already are in their simplest form. Hence 26/12 and 14/36 are not equivalent.26 and 14The fractions 26/12 and 14/36 cannot be simplified since both already are in their simplest form.
Two fractions are equivalent if they represent the same part of a whole. To find which fractions are equivalent, we can simplify each fraction by dividing the numerator and denominator by their greatest common factor. The simplified fractions will represent the same part of a whole as the original fraction and will be equivalent fractions.
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a blueprint of a house is drawn using a scale of 1/4 in = 3ft. If the bedroom of the actual house is 16 by 12 in, what are the dimensions of the bedroom of the blueprint
The dimensions of the bedroom in the blueprint are approximately 1/9 ft by 1/12 ft.
To find the dimensions of the bedroom in the blueprint, we can use the given scale of 1/4 in = 3 ft.
First, let's convert the dimensions of the actual bedroom into feet:
Length of the actual bedroom = 16 in * (1 ft / 12 in) = 16/12 ft = 4/3 ft
Width of the actual bedroom = 12 in * (1 ft / 12 in) = 12/12 ft = 1 ft
Now, let's use the scale to find the dimensions of the bedroom in the blueprint:
Length of the bedroom in the blueprint = Length of the actual bedroom * Scale
Length of the bedroom in the blueprint = (4/3 ft) * (1/4 in / 3 ft)
Length of the bedroom in the blueprint = 4/3 * 1/12
Length of the bedroom in the blueprint = 4/36
Length of the bedroom in the blueprint = 1/9 ft
Width of the bedroom in the blueprint = Width of the actual bedroom * Scale
Width of the bedroom in the blueprint = (1 ft) * (1/4 in / 3 ft)
Width of the bedroom in the blueprint = 1 * 1/12
Width of the bedroom in the blueprint = 1/12 ft
Therefore, the dimensions of the bedroom in the blueprint are approximately 1/9 ft by 1/12 ft.
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If a manufacturing company uses a single, weight-losing raw material to manufacture its finished product, then most likely the company will:_________.
i. Choose to outsource its labor component.
ii. Locate its manufacturing plant at the raw material site.
iii. Locate several manufacturing plants close to consumers.
iv. Use a ubiquitous raw material.
v. Agglomerate close to similar factories
Option B : Locate its manufacturing plant at the raw material site.
Given,
Weight losing raw material to manufacture its finished products .
Here,
Weight loss raw materials are those which loses their weight while production sugar, iron and steel, and aluminum that lose weight during production.
For example we can take the industries that require minerals for their production works .
Another example is of sugar industry which require weight losing raw material .
Thus the correct option will be B .
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1: name a plane parallel to plane WXT
2: name 2 segments parallel to VU
3: name 2 segments parallel to SW
4: name 2 segements skew to XY
5: name 2 segments skew to VZ
1. One of the planes parallel to plane WXT is the plane WXY.2. Two segments parallel to VU are AB and CD.3. Two segments parallel to SW are PQ and RS.4. Two segments skew to XY are QR and PS.5.
Two segments skew to VZ are RT and PU.A plane parallel to plane WXT:Consider the following figure below: Here, WX is parallel to YZ. Now, any plane which passes through any of the point, say X and Y, which lie on the line WX and YZ respectively, will be parallel to plane WXT. One of such plane is plane WXY.
Two segments parallel to VU:Segments AB and CD are parallel to VU in the following figure below:Two segments parallel to SW:Segments PQ and RS are parallel to SW in the following figure below:Two segments skew to XY:Segments QR and PS are skew to XY in the following figure below:Two segments skew to VZ:Segments RT and PU are skew to VZ in the following figure below:
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Suppose a chemist combines a 25% acid solution and a 50% acid solution to make 40 L of 45% acid solution. How many liters of each solution did she use? Use the blanks below to fill in your numerical answers.
__________ L of 50% solution; __________ L of 25% solution
To create a 40 L solution with a 45% acid concentration, a chemist combines a 25% acid solution and a 50% acid solution. Therefore, the chemist used 32 L of the 50% acid solution and (40 - 32) = 8 L of the 25% acid solution to create the 40 L solution with a 45% acid concentration.
Let's assume the chemist uses "x" liters of the 50% acid solution. Since the total volume of the mixture is 40 L, the remaining volume will be (40 - x) liters of the 25% acid solution.
The acid content in the 50% solution is 0.5x, while the acid content in the 25% solution is 0.25(40 - x).
To find the acid content in the final 45% solution, we multiply the acid concentration (0.45) by the total volume (40):
0.45 * 40 = 0.5x + 0.25(40 - x)
Simplifying the equation:
18 = 0.5x + 10 - 0.25x
Combining like terms:
0.25x = 8
Dividing both sides by 0.25:
x = 32
Therefore, the chemist used 32 L of the 50% acid solution and (40 - 32) = 8 L of the 25% acid solution to create the 40 L solution with a 45% acid concentration.
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A cash withdrawal of R5 000. 00 was made at Signet Blue on the
20/05/2019. Calculate what percentage the withdrawal fee is of the
transaction amount. Calculate the percentage of R5000. 00
The withdrawal fee of R100.00 is 2% of the transaction amount of R5,000.00.
To calculate the percentage that the withdrawal fee is of the transaction amount, we need to determine the fee amount and then express it as a percentage of the transaction amount.
Let's assume that the withdrawal fee is 2% of the transaction amount. To calculate the fee amount, we multiply the transaction amount by the fee percentage:
Fee Amount = 2% of R5,000.00
= 0.02 * R5,000.00
= R100.00
Therefore, the withdrawal fee is R100.00.
To calculate the percentage of R5000.00, we can divide the fee amount by the transaction amount and then multiply by 100 to express it as a percentage:
Percentage = (Fee Amount / Transaction Amount) * 100
= (R100.00 / R5000.00) * 100
= 2%
Hence, the withdrawal fee of R100.00 is 2% of the transaction amount of R5,000.00.
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What INVERSE OPERATION is used to solve the equationx/7=5?
The inverse operation used to solve the equation x/7 = 5 is multiplication
Inverse operations are mathematical operations that reverse or undo each other. To isolate the variable, inverse operations are used. For example, addition and subtraction are inverse operations, as are multiplication and division.
In an equation, inverse operations can be used to solve for a variable. In order to solve the equation x/7 = 5, we will use inverse operations.The inverse operation of division is multiplication. So, we can isolate x by multiplying both sides of the equation by 7.x/7 = 5Multiplying both sides by 7 gives:x = 7 × 5x = 35Therefore, x = 35 is the solution to the equation.
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Consider the field above. It has 5 sides. The total perimeter is LaTeX: 16x^2+21x+1616 x 2 + 21 x + 16. The lengths of the four shortest sides are LaTeX: 3x+8,\:2x^2+4x,\:2x^2+2x,\:and\:5x^2+3x+23 x + 8 , 2 x 2 + 4 x , 2 x 2 + 2 x , a n d 5 x 2 + 3 x + 2. Find the length of the longest side.
The answer is "The length of the longest side is 6x² - 12x + 16. Here, the total perimeter is given as LaTeX: 16x² + 21x + 16.
As there are five sides, we can express the total perimeter as the sum of all the five sides. Let the length of the longest side be 'l'.
So, the total perimeter is equal to the sum of all five sides, which can be expressed as:
3x + 8 + 2x² + 4x + 2x² + 2x + 5x² + 3x + 2 + l16x + 21x + 16
= 10x + 9x + l.
Now, we can find the length of the longest side by simplifying the above equation and solving for 'l'.
16x² + 21x + 16 = 10x² + 9x + l
l = 6x² - 12x + 16
Therefore, the length of the longest side is 6x² - 12x + 16.
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John flipped a coin 9 times and recorded 5 heads. What is the ratio of heads to tails John recorded?
John recorded 5 heads and flipped a coin 9 times. The ratio of heads to tails recorded by John is 5:4.
John flipped a coin 9 times and recorded 5 heads. To determine the ratio of heads to tails, we need to compare the number of heads to the number of tails. Since John recorded 5 heads, the remaining flips would be tails.
Therefore, the number of tails recorded would be 9 - 5 = 4. The ratio of heads to tails recorded by John is thus 5:4, which means for every 5 heads, there were 4 tails. This ratio represents the relative frequency of heads and tails in John's coin flips.
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A television offer advertised a set of knives for $20 down and $5 a month for 6 months. What is the total cost of the knives?
Therefore, the total cost of the knives is $50.
Arithmetic is the fundamental of mathematics that includes the operations of numbers. These operations are addition, subtraction, multiplication and division. Arithmetic is one of the important branches of mathematics, that lays the foundation of the subject 'Maths', for students.
The total cost of the knives is $50.
What is being offered in the television ad?
A set of knives is being offered in the television ad. The knives are being sold for $20 down and $5 a month for six months.How to determine the total cost of the knives?To calculate the total cost of the knives, we will use the formula:
Total cost = Down payment + Monthly payment × Number of monthsTotal cost
= $20 + $5 × 6 = $20 + $30
= $50
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A.
Write a recursive formula for the sequence 8, 10, 12, 14, 16,. Then find the next term.
a = a,-1 + 2, where a, 8; 18
b.
a.
+ 2, where a
18; 8
c.
a, = a -1 -2, where a, 8; 18
d. A, = a. -1
2, where a, = = 2; -2
= a. - 1
The recursive formula for the sequence is a(n) = a(n - 1) + 2 and the next term is 18
Writing a recursive formula for the sequenceFrom the question, we have the following parameters that can be used in our computation:
8, 10, 12, 14, 16,.
In the above sequence, we have
First term, a(1) = 8
And we have the common difference to be
d = 2
So, we have
a(n) = a(n - 1) + 2
The next term of the sequence is
Next = 16 + 2
Evaluate
Next = 18
Hence, the recursive formula for the sequence is a(n) = a(n - 1) + 2
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There are 640 acres in a square mile, and 5280 feet in 1. 00 mile. What is the length in feet (to the nearest foot) of the side of a square having an area of 1. 00 acre?
The side lengt of the square is approximately 1839 feet.
How to find the side length?To find the length in feet of the side of a square with an area of 1.00 acre, we need to convert the acreage to square feet.
Given:
1 acre = 640 acres/mile² (640 acres in a square mile)
1 mile = 5280 feet (conversion factor from miles to feet)
To convert acres to square feet, we can multiply by the conversion factor:
1 acre = 640 acres/mile² * 1 mile² * 5280 feet
Simplifying the units:
1 acre = 640 * 5280 square feet
Now, to find the length of the side of the square, we can take the square root of the area:
Side length = √(1 acre * 640 * 5280 square feet)
Calculating:
Side length ≈ √(1 * 640 * 5280) ≈ √3379200 ≈ 1839.29 feet
Rounding to the nearest foot, the length of the side of the square with an area of 1.00 acre is approximately 1839 feet.
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The spheres cost $2 per square foot and Selim can spend $20 per sphere. What is the maximum diameter of the spheres he can purchase?
The surface area of a sphere is 4πr2, where r is the radius of the sphere. The cost of a sphere is 2 per square foot, so the cost of a sphere with radius r is 8πr2. Selim can spend 20 per sphere, so he can purchase a sphere with radius r such that 8πr2≤20. This inequality can be solved for r to get r≤8π20=2π5. The diameter of a sphere is 2r, so the maximum diameter of the spheres Selim can purchase is 22π5=10π≈3.162 feet.
2 dot plots. The highlands have a mean rainfall of 15. 27 millimeters, and the Lowlands have a mean rainfall of 12. 05 millimeters. The dot plots show rainfall totals for several spring storms in highland areas and lowland areas. What is the mean rainfall for the highland storms? What is the mean rainfall for the lowland storms?.
The mean rainfall for the highland storms is 15.27 millimeters, and the mean rainfall for the lowland storms is 12.05 millimeters.
In the dot plots, each dot represents the rainfall total for a spring storm in either the highland or lowland areas. To find the mean rainfall, we calculate the average of all the rainfall values in each plot.
For the highland storms, the mean is 15.27 millimeters, which indicates that, on average, the rainfall for the spring storms in the highland areas is 15.27 millimeters.
For the lowland storms, the mean is 12.05 millimeters, suggesting that the average rainfall for the spring storms in the lowland areas is 12.05 millimeters.
These values provide a measure of the central tendency or average rainfall for the respective areas and can help in comparing the rainfall patterns between the highlands and lowlands.
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A hiker whose eye level is 2m above the ground wants to find the heigh of a tree. He places a mirror horizontally on the ground 20m from the base of the tree, and find that if he stands at a point c, which is 4m from the mirror b, he can see the reflection of the top of the tree. How tall is the tree
The height of the tree is 12 meters.
To solve this problem, we can use similar triangles.
Let's denote the height of the tree as 'h'.
We have a right triangle formed by the hiker's line of sight, the mirror, and the reflected image of the top of the tree.
The vertical leg of this triangle is 'h', and the horizontal leg is the sum of the distance between the mirror and the base of the tree (20m) and the distance between the mirror and the hiker (4m).
So the horizontal leg is 20m + 4m = 24m.
Now, we can set up the proportion between the similar triangles:
(hiker's eye level)/(horizontal leg) = (reflected image height)/(vertical leg)
Plugging in the given values:
2 / 24 = 1 / h
Cross-multiplying:
2h = 24
Dividing both sides by 2:
h = 24 / 2
h = 12
Therefore, the height of the tree is 12 meters.
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Maija is building a square sandbox with sides 2 feet long. She wants to put sand 1.55 feet deep in the box. How much sand should Maija order?
To calculate the amount of sand Maija should order, we need to find the volume of the sandbox. The sandbox is in the shape of a cube, so its volume is determined by multiplying the length, width, and height.
Given that the sides of the square sandbox are 2 feet long and the desired depth of the sand is 1.55 feet, we can calculate the volume as follows:
[tex]\[ \text{Volume} = \text{Length} \times \text{Width} \times \text{Height} \][/tex]
Since all sides of the sandbox are equal in length (2 feet), the formula simplifies to:
[tex]\[ \text{Volume} = \text{Side}^3 \][/tex]
Substituting the values:
[tex]\[ \text{Volume} = 2 \, \text{ft} \times 2 \, \text{ft} \times 1.55 \, \text{ft} \][/tex]
[tex]\[ \text{Volume} = 6.2 \, \text{cubic feet} \][/tex]
Therefore, Maija should order 6.2 cubic feet of sand for her sandbox.
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For the circle: (x+3)^2 + (y-4)^2 = 100, find the length of the diameter
The length of the diameter of the circle in this problem is given as follows:
20 units.
What is the equation of a circle?The equation of a circle of center [tex](x_0, y_0)[/tex] and radius r is given by:
[tex](x - x_0)^2 + (y - y_0)^2 = r^2[/tex]
The equation for this problem is given as follows:
(x + 3)² + (y - 4)² = 100.
Hence the measure of the radius is given as follows:
r = 10 units.
The diameter has a measure which is twice the radius, hence:
d = 2 x 10
d = 20 units.
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4) Emily can walk 3/4 of a mile in 1/4 of an hour. At
this same rate, how long does it take Emily to walk 1
mile?
A.1/2 of an hour
B. 2/5 of an hour
C. 1/3 of an hour
D. 2/3 of an hour
Emily can walk 3/4 of a mile in 1/4 of an hour. At the same rate, time taken to walk 1 mile =1/3 of an hour.
Mathematical representation
We know that, Emily can walk 3/4 of a mile in 1/4 of an hour.
Meaning,
Time taken to walk 3/4 of a mile = 1/4 of an hour
Distance covered = 3/4 mile
We need to find the time taken by Emily to walk 1 mile.
The rate is defined as the distance covered in unit time. So,
Rate = Distance / Time
We know that Rate of Emily = 3/4 ÷ 1/4
= 3/4 × 4/1
= 3 miles/hour
The rate of walking is 3 miles/hour.
Now we can find the time taken to walk 1 mile using rate formula.
Distance = Rate × Time
We have to walk 1 mile and the rate of walking is 3 miles/hour.
Time = Distance / Rate
Time taken to walk 1 mile = 1 / 3 = 1/3 hour.
So, the answer is option C.
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Factor completely 10x2 2x − 8. 2(5x − 1)(x 4) 2(5x − 4)(x 1) 2(5x 2)(x − 2) 2(5x − 2)(x 2).
This means that the expression 10x² + 2x - 8 completely factored as 2(5x - 2)(x + 2).
The correct factored form of the expression 10x² + 2x - 8 is:
2(5x - 2)(x + 2).
To factor the quadratic expression completely for common factors first that the coefficient 2 is a common factor in all three terms. After factoring out 2, left with (5x² + x - 4).
An factor the trinomial (5x² + x - 4). However, this trinomial cannot be factored further using integer coefficients.
So, the factored form of the expression is 2(5x - 2)(x + 2).
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Cindy has scores of 72, 82, 83 and 89 on her Biology tests. The Final Exam counts as two tests and she will receive a C in the course if her average is from 77-84. What score must she receive on her Final Exam to earn a C in Biology?
Cindy has scores of 72, 82, 83 and 89 on her Biology tests. Cindy must score between 68 and 89 on her final exam to earn a C in Biology.
Cindy's current average score in Biology is:
(72 + 82 + 83 + 89) / 4 = 81.5
Since the final exam counts as two tests, we can calculate the total number of points Cindy can earn in the course as follows:
Total points = 4 tests + 2 tests = 6 tests
To earn a C in the course, her average score must be between 77 and 84. Let's assume she needs to score x on her final exam to achieve a C. Then her total points would be:
Total points = 72 + 82 + 83 + 89 + x + x
Simplifying this equation, we get:
Total points = 326 + 2x
To earn a C, Cindy's average score must be between 77 and 84. Therefore, we can set up an inequality:
77 <= (326 + 2x) / 6 <= 84
Multiplying both sides by 6, we get:
462 <= 326 + 2x <= 504
Subtracting 326 from all sides, we get:
136 <= 2x <= 178
Dividing by 2, we get:
68 <= x <= 89
Therefore, Cindy must score between 68 and 89 on her final exam to earn a C in Biology.
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What number should be added to (-5)/8 so as to get 5/9
Therefore, the value that needs to be added to (-5)/8 in order to get 5/9 is -5/72.
To get 5/9, what number should be added to (-5)/8?
We can begin the solution by adding "x" to (-5)/8. Then, we will have:((-5)/8) + x = 5/9
The next step is to isolate the variable x, which is accomplished by subtracting (-5)/8 from both sides. The equation becomes:(-5/8) + (5/9) = x
We'll need to find a common denominator for this expression:
((-45)/72) + (40/72) = xSimplifying, we get:
((-45) + 40)/72 = x(-5)/72 = x
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