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Scorpion4ik [409]
3 years ago
7

Please help! Solve for M. R=9/5M+21

Mathematics
1 answer:
ElenaW [278]3 years ago
8 0

Answer:

The answer should be M = 5/9(R - 21)

Step-by-step explanation:

To find this value, follow the order of operations to isolate M.

R = 9/5M + 21

R - 21 = 9/5M

5/9(R - 21) = M

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The label on a 2 1/2 pound grass seeds states that it will cover an area of 400 Square feet based on the information what is the
Nostrana [21]

Answer:

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Step-by-step explanation:

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160 x 2.5 = 400

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5 0
2 years ago
20. The H.M. between 2 and 8 is<br>(1 marks )​
e-lub [12.9K]

Answer as an improper fraction = 16/5

Answer as a mixed number = 3 & 1/5

Answer in decimal form = 3.2

All of those values represent the same thing, but written in a different way.

=============================================================

Explanation:

I'm assuming HM stands for Harmonic Mean in this case.

If so, then we apply the reciprocal operation to each value to get 1/2 and 1/8 (from 2 and 8 respectively).

Add up those fractions:

1/2 + 1/8 = 4/8 + 1/8 = 5/8

Now we'll divide n = 2 over that result. The n = 2 refers to the number of items in the original set.

n divide over (5/8) = 2*(8/5) = 16/5 which is the answer as an improper fraction

-----------

To convert to a mixed number, we can do the following:

16/5 = (15+1)/5

16/5 = 15/5 + 1/5

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Or if you need the answer in decimal form, then using a calculator would get you 16/5 = 3.2

6 0
2 years ago
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