Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 9 - Section 9.4 - Variation and Problem Solving - Exercise Set - Page 663: 22

Answer

15 pounds

Work Step by Step

weight = k/distance^2 160 pounds, 4000 miles from center $160 = k/4000^2$ $160=k/16000000$ $160*16000000=k/16000000*16000000$ $2560000000 = k$ weight unknown, 4200 miles from center $w=k/4200^2$ $w=2560000000/17640000$ $w=256000/1764$ $w=14.51
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