3 years ago

3/5 of a number is 21. Find the number.

Mathematics

1 answer:

raketka [301]3 years ago

7 0

Answer:

12.6

Step-by-step explanation:

multiply 3/5 by 21

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Answer:

Step-by-step explanation:

Let p represent the population

in 1965 → the population becomes 2p

in 1970 → the population becomes 2(2p) = 4p

in 1975 → the population becomes 2(4p) = 8p

p ——————> 100%

8p ————-—-> x%

then

$x=\frac{8p*100}{p}=800$

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3 years ago

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It has one solution.

please see the attached picture for full solution

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D.2.5 cm. I think...

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3 years ago

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Answer:

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3 years ago

What number is less than -2 4/5 and greater than -31/5

IgorC [24]

Using a calculator, you should find that

-2 & 4/5 = -(2 + 4/5) = -(2+0.8) = -2.8

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So the unknown number is between -6.2 and -2.8

<h3>Possible whole number answers could be: -6, -5, -4, -3, or -2</h3>

If your teacher allows decimal answers, then there are infinitely many possible ways to answer.

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3 years ago