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3 years ago

7500 square feet in 2 1/2 hours

Mathematics

2 answers:

ira [324]3 years ago

5 0

Divide 7500 by 2.5 which gives you 3000

marshall27 [118]3 years ago

4 0

Answer:3000

Step-by-step explanation:divide 7500 by 2.5and it gives you 3000

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How to do this question??

dusya [7]

I'm going to suppose that this is asking for the volume.
The formula to find volume for a cylinder is V= pi r 2(squared) h
The radius is 10cm and the height is 14cm
Then plug the numbers in
So you should get V=3.14 x 10(squared) x 14
The once you multiply all that you should get 4396 cm(cubed)

5 0

2 years ago

Assume that the radius r of a sphere is expanding at a rate of 40 cm/min. The volume of a sphere is V = 4 3 πr3 and its surface

Scrat [10]

Answer:

The rate of change in surface area when r = 20 cm is 20,106.19 cm²/min.

Step-by-step explanation:

The area of a sphere is given by the following formula:

$A = 4\pi r^{2}$

In which A is the area, measured in cm², and r is the radius, measured in cm.

Assume that the radius r of a sphere is expanding at a rate of 40 cm/min.

This means that $\frac{dr}{dt} = 40$

Determine the rate of change in surface area when r = 20 cm.

This is $\frac{dA}{dt}$ when $r = 20$ . So

$A = 4\pi r^{2}$

Applying implicit differentiation.

We have two variables, A and r, so:

$\frac{dA}{dt} = 8r\pi \frac{dr}{dt}$

$\frac{dA}{dt} = 8*20\pi*40$

$\frac{dA}{dt} = 20106.19$

The rate of change in surface area when r = 20 cm is 20,106.19 cm²/min.

6 0

2 years ago

Evaluate the expression if a = 2, b = −3, c = −4, h = 6, y = 4, and z = −1.

scZoUnD [109]

Step-by-step explanation:

Hope it helps. Please mark as brainliest.

6 0

2 years ago

If muffins cost 5.24 how much would 5 muffins cost

natta225 [31]

5.24 x 5 = $26.2
5 Muffins would cost $26.2

3 0

2 years ago

Read 2 more answers

Identify the number that does not belong with the other three. Explain your reasoning.

mojhsa [17]

Answer:

To identify which integer does not belong with the rest, we must first evaluate each.

Step-by-step explanation:

[25.6...] is already evaluated. Therefore, let's move on to Integer b: $\sqrt{x}$ , where is x is 48.

48 = 2 * 24--> 2 * 12--> 2 * 6--> 2 * 3

√48 = $\sqrt{2}$ * 2 * 2 * 2 * 3

We have 1 perfect sqaure: $\sqrt{2}$ * 2

When we multiply, we receive 2.

Therefore, 2 * $\sqrt{2 * 3}$

When -51/2 is relatively prime, we receive -25 1/2

Finally, the last integer is already simplified.

Based on these results, you may determine the number that does not belong with the other three, whether than is through means of irrationability, value, absolte value, or whatever other means you decide.

6 0

3 years ago