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Algebra_3

Chapter 63

Problem 4

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Definition: rpm = revolutions per minute.

The average rotation speed of the first motors was rpm
The average rotation speed of the next motors was rpm
What was the overall average rotation speed R of all of the motors?


The overall average rotation speed R = rpm




Example:

The average weight of the first 6 pumpkins was 15 pounds.
The average weight of the next 14 pumpkins was 30 pounds.
What was the overal average weight Wave of the pumpkins?

The overall mean (average) can be written as click refresh (F5)

Try this solution by entering (6*15 + 14*30)/(15 + 30) into the Graphing Calculator below in the Function f(x) = box .
Click on the Plot Graph button.
The answer will appear below the Function f(x)=box as f(x) = 11.333...