Answer
$W=50$
Work Step by Step
Let $u$ be the vector from $P$ to $Q$
$u=(8,9)-(5,3)=(8-5,9-3)=(4,6)$
Now, let's find the dot product of $u$ and $v$:
$W=u.v=(4,6)(2,7)=4\times2+6\times7=8+42=50$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 8 - Review Exercises - Page 618: 93
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
