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Tamiku [17]
3 years ago
15

The ratio of boys to girls is 3 to 2. if there are 12 boys how many girls are there?

Mathematics
2 answers:
Maksim231197 [3]3 years ago
6 0
In this scenario there would be eight girls (8)
melisa1 [442]3 years ago
3 0
2/12=6 
3*6=18 
there are 18 girls
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Factor the expression completely. (If the expression is not factorable using integers, enter PRIME.)
Archy [21]
First you have to put like terms together:
bf+af+be+ae
Now you factor the first two terms and then the two last terms:
f(b+a)+e(b+a)
Now you factor even further. By putting what is in parentheses by what is outside the parentheses:
(b+a)(f+e)
What you got is correct as mine is too. I hope this formula helps for future problems:
ax+bx+ac+bc=x(a+b)+c(a+b)
=(a+b)(x+c)


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3 years ago
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4 pencils and 3 crayons are 20.9 inches. 5 pencils and 4 crayons are 26.5 inches. Each pencil is the same length as the other pe
erastova [34]

Answer:

The length of the pencils is 4.1 inches and for the crayons 1.5 inches

Step-by-step explanation:

We can solve by means of a 2x2 system of equations, we have to:

let "x" be the length of the pencils

let "y" be the length of the crayons

4 * x + 3 * y = 20.9

5 * x + 4 * y = 26.5 => x = (26.5 - 4 * y) / 5

Replacing:

4 * (26.5 - 4 * y) / 5 + 3 * y = 20.9

21.2 - 3.2 * y + 3 * y = 20.9

-0.2 * y = 20.9 - 21.2

y = -0.3 / -0.2

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now for x:

x = (26.5 - 4 * 1.5) / 5

x = 4.1

This means that the length of the pencils is 4.1 inches and for the crayons 1.5 inches

5 0
3 years ago
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vovangra [49]
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Answer:

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Step-by-step explanation:

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Answer:

She needs to do 39 more rotations.

Step-by-step explanation:

45-6=39

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3 years ago
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