Answer
$27$
Work Step by Step
The product of two integers with the same signs is positive.
Thus,
$(-3)(-9)=27$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 2 - Section 2.3 - Multiplication and Division of Signed Numbers - Signed Numbers Drill 3 - Page 114: 7
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