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Algebra_3

Chapter 68

Problem 4

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In the first test AAA batteries lasted days.
In the second test AAA batteries lasted days.
What was the overall average lifetime N for the batteries?

The overall average battery lifetime N = days




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...