Prealgebra (7th Edition)

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

Chapter 6 - Review - Page 460: 44



Work Step by Step

$21^2+20^2=x^2$ $441+400=x^2$ $841=x^{2}$ $\sqrt {841}=x$ $29=x$, because $29\times29=841$
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.