Answer
$r=\frac{d}{t}$
$t=\frac{d}{r}$
Work Step by Step
We solve for $r$ by dividing by $t$:
$\displaystyle \frac{d}{t}=\frac{rt}{t}$
$r=\frac{d}{t}$
We solve for $t$ by dividing by $r$:
$\displaystyle \frac{d}{r}=\frac{rt}{r}$
$t=\frac{d}{r}$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter P, Prerequisites - Section P.9 - Modeling with Equations - P.9 Exercises - Page 70: 6
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