2 years ago

PLEASE HELPPP ITS DUE TODAY ILL GIVE U A GOOD REVIEW THINGY

Mathematics

1 answer:

mariarad [96]2 years ago

5 0

I think your answer would be G:)

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Umnica [9.8K]

The answer will be D

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2 years ago

Company A: $21 per jersey<br>company B: $18 per jersey+$45 fee. when is company a best?

Anni [7]

So I would first find out when they are equal then do one more than that. 21x=18x+45, 3x=45, x=15 so the answer would be 16 jerseys

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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.

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2 years ago

What does a graph look like that has a single solution of (-2,-3)

sladkih [1.3K]

If you mean intersecting lines then...

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2 years ago

Help I’m stuck on this( I can’t remember how to do it)

mr_godi [17]

A squared +b squared= c squared
a squared+7 squared =10 squared
a squared + 49= 100
Then subtract 49 from 100 which is 51. Then your square root that number which is 7.14143

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2 years ago