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 - 1.1 Introduction to Algebra - 1.1 Exercise Set: 84

Answer

9

Work Step by Step

Evaluate $\frac{x+y}{2}$ when y is twice x and x is 6. Write an expression for y in terms of x. $y=2x\longrightarrow$ Substitute for x to find y. $y=2(6)=12$ $\frac{x+y}{2}=\longrightarrow$ Substitute for x and y in the original formula. $\frac{6+12}{2}=\longrightarrow$ Solve $\frac{18}{2}=$ $9$
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.