a. 109.00 ind the measure of the angle & between u = (3, -2, 0) and v = (-4, 3, 1). b. 11.70 C. 168.30 d. 176.80 onto v. 10. Consider vectors u = and v = . Write u as the sum of two orthogonal vectors, one of which is the projection of u a. , b . C. d. , 1 1. Find the cross product of v = (-5, 4, -8) and w = (6,-2, 6). a. (34, - 78, 34) b. (8, -18, - 14 ) C. -8, 16, 14) d. (-34, 78, - 34) 12. Find the area of the parallelogram with adjacent sides u = (-3, 4, 8) and v = (9, -1, 6). a. 82.7 units2 b. 76 units c. 101.1 units2 d. 32 units2 13. Find the volume of the parallelepiped with adjacent edges u = (1, -4, 2),v = (6,-5, 1), and w = (3,-4, -8). a. 126 units3 b. 178 units3 c. 90 units d. 230 units3 14. ROCKETS The height in feet of a rocket t seconds after launch is modeled by h(t) = -161 + 721. Find its average speed 3 to 4 seconds. a. 56 ft/sec b. 40 ft/sec c. -40 ft/sec d. -56 ft/sec 15. Find the slope of the line tangent to the graph of y = ~ at the point ( 1, 2). a. -2 b. 1 c. -1 d. 2