Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 1 - Introduction to Algebraic Expressions - 1.3 Fraction Notation - 1.3 Exercise Set - Page 28: 104


$\frac{142}{45}$, $3\frac{7}{45}$, or $3.155...$.

Work Step by Step

The formula for a rectangle's perimeter is $P=2l+2w$. The length is $\frac{4}{5}$m, and the width is $\frac{7}{9}$m. To solve, insert the values into the formula, as shown below. $P=2(\frac{4}{5})+2(\frac{7}{9})$ $P=\frac{8}{5}+\frac{14}{9}$ $P=\frac{72}{45}+\frac{70}{45}$ $P=\frac{142}{45}$ It can also be written as $3\frac{7}{45}$ or $3.155...$.
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