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Algebra_2
Chapter 49
Problem 2
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The mean of three numbers is 10.
Two of the numbers are 4 and 7.
Find the third number (N).
The mean (average) can be written as
Solving this for the third number gives
-4-7=19)
Try this solution by entering 3(10)-4-7 into the Graphing Calculator in the
Function = box .
Click on the
Enter your Function button
Click on the
Plot Graph button to obtain your solution as f(x) = 19
