Prealgebra (7th Edition)

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



Work Step by Step

To find the average, sum the numbers then divide the sum by the count of the numbers. $[(-10)+8+(-4)+2+7+(-5)+(-12)]\div7=[(-31)+17]\div7=(-14)\div7=-2$
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