**As a person climbing a mountain increases walking speed, the rate of calories burned, height traveled, and energy expended also increase. Which of the following is the independent variable?**

Walking speed

Energy

Calories

Height

*Correct Answer : A*

An independent variable is a change that when modified brings a change in other variables. In this case, the person increases his climbing rate, calories burned, distance traveled and energy used increases. Therefore, the walking speed is the independent variable while other variables are dependent.

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Related Questions

### Correct Answer is C

#### Explanation

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We apply the Pythagoras theorem, the value of p:

The unknown length of the triangle is about 21.4 feet.

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#### Explanation

We need to find the radius of the circle from the given value of area. Then, the radius of the circle will be used to find the circumference of the circle.

The first step is to find the radius, r of the circle as

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### Correct Answer is D

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3.60 * 0.75 = 2.7

### Correct Answer is D

#### Explanation

We use the order of operation to solve for the unknown value of x.

3(3x+3)=8x+5

Multiply 3 with each number in the brackets

(3*3x)+(3*3)=8x+5

9x+9=8x+5

Subtract 9 from both sides

9x+9-9=8x+5-9

9x=8x-4

Subtract 8x on both sides

9x-8x=8x-8x-4

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### Correct Answer is C

#### Explanation

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Converting between teaspoon and mL uses the following conversions:

Or

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### Correct Answer is D

#### Explanation

Based rainfall falling for the first 5 months, a bar graph will give a great display for the farmer to decide when start planting. The horizontal scale will represent months of the year and vertical scale will present the amount of rainfall falling.

### Correct Answer is D

#### Explanation

To form an equation from the word problem, first break the given statement into smaller statements.

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Length=3*width=3*x=3x

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### Correct Answer is C

#### Explanation

Correlation of two variables falls into:

Positive correlation: an increase in one variable causes another variable to increase

Negative correlation: an increase in one variable causes another one to decrease

No correlation: a change in one variable does not cause any response in another variable.

From the given choices

Option a is no correlation

Option b is a no correlation

Option c is a negative correlation

Option d is a positive correlation

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#### Explanation

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### Correct Answer is D

#### Explanation

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Find radius of the pizza in terms of diameter

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Substituting r=6 in the equation of the area of a circle

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