Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 1, Equations and Inequalities - 1.4 Rewrite Equations and Formulas - 1.4 Exercises - Problem Solving - Page 32: 36b


$r_{75y.}\approx 46.17$y. $r_{100y.}\approx 38.22$y. $r_{125y.}\approx 30.26$y. $r_{150y.}\approx 22.3$y.

Work Step by Step

From part (a), we have $r=\dfrac{(P-2x)}{2 \pi}$ Plug $440 y.$ for $P$ and $75 y$ for $x$ in the above equation. Thus, we have $r_{75y.}=\dfrac{440-(2)(75)}{2 (3.14)}\approx 46.17$y. Likewise, in the same manner, we have $r_{100y.}=\dfrac{440-(2)(100)}{2 (3.14)}\approx 38.22$y. $r_{125y.}=\dfrac{440-(2)(125)}{2 (3.14)}\approx 30.26$y. $r_{150y.}=\dfrac{440-(2)(150)}{2 (3.14)}\approx 22.3$y.
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