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3 years ago

Solve the proportional equation 3/r = 5/r+3

Mathematics

1 answer:

romanna [79]3 years ago

6 0

Answer:

r=9/2 or 4.5

Step-by-step explanation:

First of all our goal is to get R by itself

by cross multiplying we get,

(r+3)*3=5r

by distributive property we get

3r+9=5r

substracting 3r from both sides we get

9=2r

by dividing by 2 in both sides we get

r=9/2 or 4.5

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Step-by-step explanation:

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3 years ago

Suppose that many large samples are taken from a population and that the

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Answer:

$0.22 -1 *0.029 =0.191$

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And the best option would be:

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Step-by-step explanation:

For this case we know that the mean is:

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$0.22 -1 *0.029 =0.191$

$0.22 +1 *0.029 =0.249$

And the best option would be:

D. (0.191 to 0.249)

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