Solve the problem.
-If u =-5, 3 , v =-2, -6 , and w =-3, 12, evaluate (u + v) ·w.
A) -10
B) -19
C) -8
D) -15

Name: Solve the problem. -If u =-5, 3 , v =-2, -6 , and w =-3, 12, evaluate (u + v) ·w. A) -10 B) -19 C) -8 D) -15
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Question

Quizplus · Accepted Answer

First, add vectors u and v: u + v = (-5 + (-2), 3 + (-6)) = (-7, -3). Then, find the dot product of (u + v) with w: (-7, -3) · (-3, 12) = (-7)(-3) + (-3)(12) = 21 - 36 = -15.

Solve the Problem. -If U =-5, 3 , V =-2, -6 , and -6