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Nutka1998 [239]
3 years ago
5

47. A percent is a comparison of a number to 100 using what operation?

Mathematics
1 answer:
Greeley [361]3 years ago
8 0
Usually to find the percent of a number you put that number over 100 so i think it would be division
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The area of the cross section of a sphere at the largest point is 100π square miles. what is the total surface area of this sphe
Firlakuza [10]

The cross-section of a sphere  is a circle . The  area of a circle can be calculated by the formula A= \pi\r^{2} Where r is the radius of the circle.

Given :\pir^{2}   = 100\pi

Solving for r we have:

r^{2} = \frac{100\pi }{\pi}=   100

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The area of a sphere is calculated by the formula :

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Substituting r value we have:

SA= 4\pi\ 10 ^{2}    = 400\pi

The total surface area of this sphere is 400π .

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Sindrei [870]

Answer:

x< -0.24

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So this is going to sound stupid, but I got x< -0.24 which is just not an option, but this is how I got it...

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I switch the way the sign was facing bc I divided by a negative.

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3 years ago
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