Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 8 - Geometry - 8.8 Pythagorean Theorem - 8.8 Exercises - Page 592: 37

Answer

Error 1: Miscalculation when squaring the two numbers Error 2: Rounding to the nearest thousandths Correct Answer: $? \approx 11.4$ in

Work Step by Step

1. Explaining the two errors Error 1: ($9^{2} \ne 18$) and ($7^{2} \ne 14$) Nine squared and fourteen squared does not equal to the number written in the step after and therefore is the first calculation mistake that they made. Error 2: $5.657$ rounded to nearest thousandths The final answer is NOT rounded to the nearest tenths and is instead rounded to the nearest thousandths. The question specifically asks for the final value to be rounded to the nearest tenths and that request was not made. Therefore this was the second mistake that they made. 2. Correct Answer $?^{2} = 9^{2} + 7^{2}$ $?^{2} = 81 + 49$ $?^{2} = 130$ $? = \sqrt 130$ $? = 11.401...$ $? \approx 11.4$ in
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.