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: 68

Answer

$-\dfrac{5}{2}$

Work Step by Step

The given expression, $ -2\div(0.8) $, simplifies to \begin{array}{l}\require{cancel} \dfrac{-2}{0.8} \\\\= \dfrac{-2}{0.8}\cdot\dfrac{10}{10} \\\\= \dfrac{-20}{8} \\\\= \dfrac{\cancel{4}\cdot(-5)}{\cancel{4}\cdot2} \\\\= \dfrac{-5}{2} \\\\= -\dfrac{5}{2} .\end{array}
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