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Ivanshal [37]
3 years ago
11

A grade has 81 girls and 72 boys. The grade is split into groups that have the same ratio of girls to boys as the whole grade. H

ow many girls are in a group that has 16 boys?
Mathematics
1 answer:
Delicious77 [7]3 years ago
4 0
There will be 18 girls in a group of 16 boys.

you divide 72 by 16 and get 4.5.
then you divide 81 by 4.5 and get 18.

That is how you get 18 girls in a  group of 16 boys.

Hope that helped.
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Answer:

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Step-by-step explanation:

we add 2 and 3 because they are equal parts:

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Then we divide 45 by 5 because we want to find what 1 part equals"

45/5=9

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hope this makes sense!

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3 years ago
FIND Y OF THIS CIRCLE.
kotegsom [21]

Answer:

  y = 116

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3 years ago
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frez [133]

Answer:

length =  \sqrt{ {(x _{2}  - x _{1} ) {}^{2}  + (y _{2} - y _{1} )}^{2} }  \\  =  \sqrt{ {(2 - ( - 7))}^{2} +  {( - 5 - 4)}^{2}  }  \\  =  \sqrt{ {9}^{2}  +  {( - 9)}^{2} }  \\  =  \sqrt{81 + 81}  \\  \sqrt{162}  \\  = 12.7 \: units

5 0
2 years ago
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ArbitrLikvidat [17]

Answer:

Hey there!

The common ratio is 5, because you multiply by 5 to get from one term to the next.

Hope this helps :)

6 0
3 years ago
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