Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 7 - Exponents and Exponential Functions - 7-2 Multiplying Powers With the Same Base - Lesson Check - Page 429: 3



Work Step by Step

(3$\times$$10^{5}$)$\times$(8$\times$$10^{4}$) = (3$\times$8)($10^{5+4}$) = 24$\times$$10^{9}$ = 2.4$\times$$10^{10}$ If you add a decimal to the answer from left to right, then you add 1 to the exponent, so that is why the power changed from 9 to 10 as you added an extra decimal.
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.