Answer
$a•b=-3.6$
Work Step by Step
$a•b=a_{x}b_{x}+a_{y}b_{y}=(1.5)(-4)+(0.4)(6)=-3.6$
Calculus: Early Transcendentals 8th Edition
by Stewart, James
Published by
Cengage Learning
ISBN 10:
1285741552
ISBN 13:
978-1-28574-155-0
Chapter 12 - Section 12.3 - The Dot Product - 12.3 Exercises - Page 812: 3
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