Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 6 - Review - Page 460: 45



Work Step by Step

$9^2+x^2=14^2$ $81+x^2=196$ $x^2=196-81$ $x=\sqrt {115}$ $\sqrt {115}\approx10$ Divide and find the average to find the approximate solution. $115\div10=11.5$ $(10+11.5)\div2=10.8$ Repeat to further refine, $115\div10.8=10.6$ $(10.8+10.6)2=10.7$
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