Algebra and Trigonometry 10th Edition

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

Chapter 2 - 2.2 - Functions - 2.2 Exercises - Page 185: 70a

Answer

The force of the water against the dam increases as the depth of the water increases.

Work Step by Step

We are given the function: $F(y)=149.76\sqrt{10}y^{5/2}$ Compute $F(y)$ for $y=5,10,20,30,40$: $F(5)=149.76\sqrt{10}(5^{5/2})\approx 26,474.08$ $F(10)=149.76\sqrt{10}(10^{5/2})=149,760.00$ $F(20)=149.76\sqrt{10}(20^{5/2})\approx 847,170.49$ $F(30)=149.76\sqrt{10}(30^{5/2})\approx 2,334,527.36$ $F(40)=149.76\sqrt{10}(40^{5/2})=4,792,320.00$ Place the results in the table. We notice that as the depth of the water increases, the force of the water against the dam increases.
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