Which of the following statements contain a variable? Check all that apply.A. The number of different colors on the page.
B. They scored 27 points.
C. Eighty miles per hour.
D. Half the speed of the car.

Answers

Answer 1
Answer:

A. The number of different colors on the page.

D. Half the speed of the car.

These statements contain variables representing unknown quantities or values.

Variables in mathematics and science are symbols that represent unknown values or quantities. Let's analyze each statement to identify the ones containing variables:

A. "The number of different colors on the page."

This statement contains a variable because it represents an unknown quantity, the number of colors.

B. "They scored 27 points."

This statement does not contain a variable as it explicitly states a specific value (27 points).

C. "Eighty miles per hour."

This statement does not contain a variable as it provides a specific constant value (80 miles per hour).

D. "Half the speed of the car."

This statement contains a variable because it represents an unknown value, which would depend on the actual speed of the car.

In summary, the statements containing variables are:

A. The number of different colors on the page.

D. Half the speed of the car.

These statements represent quantities that can vary, making them suitable for mathematical or scientific analysis where variables are used to express relationships and solve equations.

For more such questions on speed

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Answer 2
Answer: The correct answers are:

A) the number of different colors on the page; and 
D) half the speed of the car.

Explanation:

A variable represents an unknown amount.  

For A, we do not know how many colors are on the page; this means we would use a variable to represent it.

For D, while we know we want half of the speed of the car, we do not know what the speed of the car actually is; therefore we would use a variable to represent it.

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Nina walked 3.7 miles everyday for one month how many miles in all did she walk in 31 days

Answers

Nina walked 114.7 miles in 31 days. All you have to do is multiply 3.7 by 31 

Margaret is planning a rectangular garden. Its length is 4 feet less than twice its width. Its area is 170ft^2. what are the dimensions of the garden?.

Answers

If you would like to know the dimensions of the garden, you can calculate this using the following steps:

length ... (2 * x - 4) feet
width ... x feet
area ... 170 ft^2

area = length * width
170 = (2 * x - 4) * x
170 = 2 * x * x - 4 * x
170 = 2 * x^2 - 4 * x
0 = 2 * x^2 - 4 * x - 170     /2
0 = x^2 - 2 * x - 85
1. x = 1 - sqrt(86) = -8.27
2. x = 1 + sqrt(86) = 10.27

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width: x = 10.27 feet

The dimensions of the garden are 16.54 feet and 10.27 feet.

Would you classify 240 as a perfect square, perfect cube, both, or neither?

Answers

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PLEASE HELP!!! 60 points will be rewarded to the person that answers this question correctly. The two figures below have the same perimeter. What is the value of x?

1. Write an equation that can be used to represent the situation above

2. Solve the equation

3. Prove the solution by plugging it into both sides of the equation

Answers

Answer:

3 or 5

Step-by-step explanation:

Because follow the problem

What’s the result when 3a^2 - 2a + 5 is subtracted from a^2 + a - 1

Show all work

Answers

Answer:

-2a^2+3a-6

Step-by-step explanation:

a^2+a-1-(3a^2-2a+5)

=a^2+a-1-3a^2+2a-5

=-2a^2+3a-6

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Answers

We use the formula: a^2 - b^2 = (a - b )(a + b);
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