3 years ago

What is sixty two percent of ninety?

Mathematics

1 answer:

Bezzdna [24]3 years ago

5 0

The answer is 55.8 do 90/100 then multiply by 62

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I dont understand this problem

Fiesta28 [93]

Answer:

D and F

Step-by-step explanation:

$x^{2}+4x+4=12$ can be rewritten as $x^{2} +4x-8=0$ .

From there you can use the quadratic formula $x=\frac{-b±\sqrt{b^{2}+4ac } }{2a}$ (ignore the A, I can‘t seem to remove it), where a=1, b=4, and c=-8.

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Then you get $x=\frac{-4±\sqrt{48} }{2}$

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Which means $x=-2+2\sqrt{3}$ or $-2-2\sqrt{3}$ which are choices D and F.

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