Find the angle between vectors v and w. Round the answer to the nearest tenth of a degree.v = 
, w = 
A. 144.2°
B. 82.2°
C. 7.8°
D. -54.2°
Answer: C
Mathematics
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Solve the quadratic equation and express all nonreal complex solutions in terms of i.5x2 + 3x = -3
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression.
A. 
B. 
C. a - 6
D. a + 6
Mathematics
Graph the system of inequalities. Shade the region that represents the solution set.x2 + y2? 16x + y? -2
A. 
B. 
C. 
D. 
Mathematics
The polar equation represents a conic with a focus at the pole. Identify the conic.r = 
A. hyperbola B. not a conic C. ellipse D. parabola
Mathematics