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Arada [10]
3 years ago
6

Can u get the steps to solving -2(4)^2+4

Mathematics
1 answer:
svp [43]3 years ago
8 0
(4)^2 must be done first.

That’ll give you 16. (4x4)

16 x -2= -32

-32+4= -28
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A

Step-by-step explanation:

The formula that relates current, power and resistance is

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We know P = 500 and R = 25, we plug them into the formula and solve for I:

I=\sqrt{\frac{P}{R}}\\I=\sqrt{\frac{500}{25}}\\I=\sqrt{20}\\ I=4.47

Correct answer is 4.47 Amperes, or choice A.

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