3 years ago

If there are 9 girls and 11 boys in a class, what percentage of the class are girls

1 answer:

6 0

1. Find the total number of class members
9 + 11 = 20

2. Find 9 as a percentage of 20
9 / 20 = 0.45
0.45 x 100 = 45%

45% of the class are girls.

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Answer:

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Step-by-step explanation:

Given expression is $49x^2+84xy+36y^2$

To find the binomial factor :

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$=(7x)^2+2(7x)(6y)+(6y)^2$

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Therefore $49x^2+84xy+36y^2=(7x+6y)(7x+6y)$

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3 years ago

Quiz 2: percent and percentage

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Answer:

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