Solve the problem.Which of the following vectors is orthogonal to 20i - 8j?

A. w = -10i - 25j
B. w = 15i - 6j
C. w = 20i + 4j
D. w = 4i + 3j

Answer: A

Mathematics

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A.  = ; p = 80
B.  = ; p = 125
C.  = ; a = 12.5
D.  = ; b = 1.25

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A. 5 B. 36 C. -36 D. -5

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