College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.9 - Modeling with Equations - P.9 Exercises - Page 71: 43


4 inches

Work Step by Step

We know that the perimeter is 2*length+2*width. We use the image for guidance and the given fact that the perimeter is 102: $102=2(20+2x)+2(15+2x)$ We solve for $x$: $102=40+4x+30+4x$ $102=70+8x$ $32=8x$ $x=4$ So the width of the strip is 4 inches.
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.