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Do Not explain just give answer. Finish quick please. 28. Suppose a = (4, -6, 10) and b = (-6, 9, -15). What is a

Do Not explain just give answer. Finish quick please.

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28. Suppose a = (4, -6, 10) and b = (-6, 9, -15). What is a x 3 ? a. (-24, -54, -150) c. (1, -1, -1) b. (0, 0, 0) d. (-3, -2, 0) What is 29. Suppose that a = 4. What is a . a ? a. 4 c. 2 b. 16 d. More information is required. 30. What is the angle, to the nearest degree, that the vector (3, 4, -2) makes with the positive y- axis? a. 330 C. 480 b. 420 d. 560

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