Answer
42
Work Step by Step
To find the mean, we add all of the numbers and then divide by the total number of values that were added. Doing this, we find:
$$ Mean =\frac{21+63}{2} = \frac{84}{2} = 42$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 1, Equations and Inequalities - 1.6 Solve Inequalities - 1.6 Exercises - Mixed Review - Page 47: 62
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