Urgent
1. let u = < -9, 4> , v = < 8, -5> . find u - v. (5 points)
< -1, -1>
< -13, 13>
< -17, 9>
< -4, -4>

2. find the angle between the given vectors to the nearest tenth of a degree.
u = < 6, 4> , v = < 7, 5> (5 points)
0.9°
1.8°
-9.1°
11.8°

3. evaluate the expression.
r = < 5, 9, -4> , v = < 3, 3, -8> , w = < 9, -6, -1>
v ⋅ w (5 points)
< -15, -27, -32>
0
17
< 27, -18, 8>

4. two forces with magnitudes of 150 and 100 pounds act on an object at angles of 40° and 170°, respectively. find the direction and magnitude of the resultant force. round to two decimal places in all intermediate steps and in your final answer.