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10 August, 13:47

Let v = (-2,6) and w = (12,4). Which of the following is true?

A. v and w are perpendicular.

B. The x-component of v is 6.

C. VxW = 48

D. w = - 4 (-3,-1)

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Answers (1)
  1. 10 August, 14:28
    0
    A is the correct answer because the dot product of v and w is (-2•12) + (4•6), which in turn is equivalent to - 24+24, or 0.
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