2 years ago

Help!!! I’m bad at Math!

Mathematics

2 answers:

ollegr [7]2 years ago

8 0

3) -0.84, -0.32, 0.32, 0.84
4) -4/9, -1/3, 2/9, 1/3

e-lub [12.9K]2 years ago

6 0

-0.84 , -0.32, 0.32, 0.84

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<img src="https://tex.z-dn.net/?f=%20%5Cpi%20%20x%5E%7B2%7D%20" id="TexFormula1" title=" \pi x^{2} " alt=" \pi x^{2} " align="

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The formule is about area of a circle.

$\pi x^{2} = a$

We need to solve the equation for x. Where x is the radius of the circle.

In order to solve it for x, we need isolate it for x on left side.

So, first we need to get rid pi from left side.

On dividing both sides by pi, we get

$\frac{\pi x^2}\pi}=\frac{a}{\pi}$

$x^2=\frac{a}{\pi}$

Taking square root on both sides, we get

$\sqrt{x^2}=\sqrt{\frac{a}{\pi}}$

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