Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 1 - Introduction to Algebraic Expressions - 1.7 Multiplication and Division of Real Numbers - 1.7 Exercise Set - Page 58: 30

Answer

102.9

Work Step by Step

-49 x -2.1 First move the decimal one place to the right on 2.1 in order to multiply, at the end of the problem, you will swing it back. 49x 21= 1029 -49x -2.1= -102.9 Whenever you multiply a negative times a positive you multiply the absolute values of the numbers and place a negative in front of the product negative x negative= positive.
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