Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 6 - Section 6.7 - The Dot Product - Exercise Set - Page 794: 92


The value of x is $4$.

Work Step by Step

Consider the expression $5\left( 2x-3 \right)-4x=9$ and solve as follows: $\begin{align} & 5\left( 2x-3 \right)-4x=9 \\ & 10x-15-4x+15=9+15 \\ & 6x=24 \\ & x=4 \end{align}$
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