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 7 - Functions and Graphs - Study Summary - Practice Exercises - Page 495: 13

Answer

$y=0.1\cdot xz$

Work Step by Step

If $y$ varies jointly as $x$ and $z,$ then $y=kxz.$ Given $x=5, z=4, y=2$, we find k $2=k\cdot 5\cdot 4$ $ 2=20k\qquad$... divide with $20$ $k=\displaystyle \frac{2}{20}=0.1$ $y=0.1\cdot xz$
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.