Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 1 - Section 1.5 - Addition of Real Numbers - Exercise Set - Page 64: 95

Answer

False. The sum of a positive number and a negative number is not always positive.

Work Step by Step

Adding Two Numbers with Different Signs 1. Subtract the smaller absolute value from the greater absolute value. 2. Use the sign of the number with the greater absolute value. --- So, if the negative number has greater value, the sum will be negative. For example,$\qquad 1+(-3)=-(3-1)=-2$ Example 2 (if the absolute values are equal) $2+(-2) =0\qquad $(not positive...) False. The sum of a positive number and a negative number is not always positive.
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