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Natalka [10]
3 years ago
13

What is the average (or mean) of the following numbers: 12, 28, 15, 25, 20 *

Mathematics
1 answer:
Lerok [7]3 years ago
8 0
It’ll be 20.

12+28+15+25+20=100

100/5= 20

Add all the numbers and then divide by the total amount of numbers there and that’s your answer
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Step-by-step explanation:

"When 200 gallons of oil were removed from a tank" algebraically looks like this:

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Begin by multiplying both sides by 7:

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That's if the volume of the oil in the tank was 3/7 of the tank's capacity.

For the other part of the problem, we set up the equation almost the same, except the 3/7 is a 1/2:

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