Card 28 / 36: For the vectors A 4 i + 2 j + 8 k and B= 3i - 2 j - 7 k, where i, j, and k are unit vectors in a rectangular coordinate system, perform the following task. Calculate A • B.
A)
54
B)
-48
C)
48
D)
44
E)
12
Answer:
B) -48
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