Answer
-2
Work Step by Step
To find the average, sum the numbers then divide the sum by the count of the numbers.
$[(-10)+8+(-4)+2+7+(-5)+(-12)]\div7=[(-31)+17]\div7=(-14)\div7=-2$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 2 - Section 2.5 - Order of Operations - Exercise Set - Page 140: 79
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