Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 1 - P.S. Problem Solving - Page 157: 2b

Answer

15, 36, 55

Work Step by Step

$\frac{5(5+1)}{2}=15$ $\frac{8(8+1)}{2}=36$ $\frac{10(10+1)}{2}=55$
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