Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 6 - Section 6.2 - Proportions - Exercise Set: 32

Answer

$\frac{5}{3}=\frac{7}{5}$ False

Work Step by Step

x is to y is the same as $\frac{x}{y}$ To determine if a proportion is true, we have to find if the cross products are equal. The cross products of $\frac{a}{b}=\frac{c}{d}$ are $a \cdot d$ and $b \cdot c$. Five is to three as seven is to five is the same as $\frac{5}{3}=\frac{7}{5}$ This proportion is false because $5*5=25, 7*3=21, 25 \neq 21$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.