## Algebra 1: Common Core (15th Edition)

Published by Prentice Hall

# Chapter 7 - Exponents and Exponential Functions - 7-2 Multiplying Powers With the Same Base - Lesson Check - Page 429: 4

4.0$\times$$10^{4} km is the length of the equator #### Work Step by Step Length = \frac{1.9\times10^{-5}km}{1 penny} \times \frac{2.1\times10^{9}pennies}{1 round} = 39900 km = 3.99\times$$10^{4}$ km = 4.0$\times$$10^{4}$ km

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