Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 7 - Exponents and Exponential Functions - 7-2 Scientific Notation - Practice and Problem-Solving Exercises: 46

Answer

A: Proxima Centauri - 24,687,600,000,000 Sirius - 51,138,600,000,000 Vega - 164,584,000,000,000 Polaris - 2,533,418,000,000,000 B: By multiplying the number of light years by the number of miles each light year represents. C: Scientific Notation

Work Step by Step

A: To answer this part of the problem, we must multiply each number of light years times the number of miles each lightyear signifies, as such: Proxima Centauri - $4.2\times5,878,000,000,000= 24,687,600,000,000$ Sirius - $8.7\times5,878,000,000,000= 51,138,600,000,000$ Vega - $27\times5,878,000,000,000= 164,584,000,000,000$ Polaris - $431\times5,878,000,000,000= 2,533,418,000,000,000$
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