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2 years ago

14

The ratio of boys to girls in Mr. Hakeem's class is 64. If there are 18 boys, how many girls

1 answer:

Bad White [126]2 years ago

6 0

Answer: C. 12 girls

Step-by-step explanation:

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25x^2-40x-20=0\implies 5(5x^2-8x-4)=0
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5x^2-8x-4=0\implies (5x+2)(x-2)=0\implies 
\begin{cases}
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5x=-2\\\\
x=\cfrac{-2}{5}\\
-----\\
x-2=0\\
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