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3 years ago

Find the speed of a race car if it travels 5 miles in 2 minutes and 30 seconds

1 answer:

4 0

You first convert the 2 minutes and 30 seconds to 150 seconds.

Then, you take the 150s÷5m to get the number of seconds per mile.

The answer is 30s/m

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Henrique drew and labeled the net shown. He also labeled the areas of the left and right triangular sides.

Oksana_A [137]

Answer: $SA=117.2\ in^2$

Step-by-step explanation:

You need to remember the following:

1. The area of a rectangle can be calculated with the following formula:

$A_r=lw$

Where "l" is the length and "w" is the width.

2. The area of a triangle can be calculated with the following formula:

$A_t=\frac{bh}{2}$

Where "b" is the base and "h" is the height.

Use those formulas to find the area of each face.

<u> Area of the rectangle</u>

$A_r=(10\ in)(4\ in)=40\ in^2$

<u>Area of two triangles</u>

There are two equal triangles. Each one has a base of 10 inches and a height of 5 inches. Then, their areas are equal:

$A_{t1}=A_{t2}=\frac{(10\ in)(5\ in)}{2}=25\ in^2$

The areas of the other two triangles (which are equal) are:

$A_{t3}=A_{t4}=13.6\ in^2$

Adding the areas of the faces, you get that the surface area of the rectangular pyramid is:

$SA=40\ in^2+25\ in^2+25\ in^2+13.6\ in^2+13.6\ in^2\\\\SA=117.2\ in^2$

3 0

3 years ago

Read 2 more answers

In February, Paul's electric bill was three dollars more then one-half his gas bill. If the electric bill was ninety-two dollars

USPshnik [31]

Answer:

49$

Step-by-step explanation:

7 0

3 years ago

Which of the f-values satisfy the following inequality? f+8≤12 Choose all answers that apply:

Vikki [24]

The answer would be A f = 4

5 0

3 years ago

-2(2x- _)+1=17-4x For what missing value is the equation an identity?

igor_vitrenko [27]

What’s grade are you?

4 0

3 years ago

Use Green's Theorem to evaluate the line integral along the given positively oriented curve. C yex dx 2ex dy, C is the rectangle

Dennis_Churaev [7]

Answer:

2 ( e^3 + 1 )

Step-by-step explanation:

The path of the attached Rectangle is anti-clockwise

and the Integrand: P( x, y ) dx + q ( x , y ) dy

P( x, y ) = ye^x

q ( x , y ) = 2ex

hence : dq/dx - dp/dy = 2e^x - e^x = e^x

attached below is the remaining solution

using Green's theorem

7 0

3 years ago