Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 2 - Solving Equations - Mid-Chapter Quiz - Page 117: 13


$h=\frac{2A}{b}$; 8cm

Work Step by Step

$A=\frac{1}{2}bh$ Divide each side by $b$ $\frac{A}{b}=\frac{1}{2}h$ To get $h$ by itself, we have to pultiply by the reciprical of $\frac{1}{2}$ (which is 2). $h=\frac{2A}{b}$ For the second part of the problem, plug in the numbers given. $h= \frac{2\times28cm^{2}}{7cm}$ Simplify the fraction $h= \frac{2\times4cm^{2}}{1cm}$ Solve the equation $h=8cm$
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