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adell [148]
3 years ago
14

A school has 55 students . If 10 of the students are boys , what is the ratio of girls to boys ?

Mathematics
1 answer:
Art [367]3 years ago
4 0
45:10 I think ? .. that’s how my teacher did it
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In a right triangle ABC with the right angle at C, TanA=0.75 What is TanB?
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Twenty percent of a radioactive substance decays in ten years by what percent does the substance decay each year
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Answer:

2%

Step-by-step explanation:

20% takes 10 years to decay

To find per year decay, we divide the percentage by the number of years, so we get unit rate of years {per year]. Thus we have:

20%/10 = 2% per year

It's that simple.

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