Algebra 1

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

Chapter 1 - Foundations for Algebra - 1-4 Properties of Real Numbers - Practice and Problem-Solving Exercises: 49

Answer

$390$

Work Step by Step

We start with the given expression: $25\times3.9\times4$ The commutative property of multiplication states that changing the order of the factors does not affect the product. We use this property to rearrange the factors: $25\times4\times3.9$ We simplify using the order of operations: We multiply from left to right: $100\times3.9=390$
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