Find the angle between u and v in radians.u = -5i - 7j, v = 4i + 5j + 9k
A. 1.86
B. 1.58
C. 2.19
D. -0.62
Answer: C
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Factor by any method.4x2 - 4x + 1 - y2
A. (2x - 1 + y)(2x - 1 - y) B. prime C. (2x + 1 + y)(2x + 1 - y) D. (2x - 1 + y)(2x + 1 - y)
Solve.(2x - 1)(x + 1) = 1
A. 
, 
B. 
, 
C. 
, 
D. 
, 
Divide.-4.8 ÷ 0.08
A. -4.72
B. 
C. -47.2
D. -60
Use Bayes' rule to find the indicated probability.Quality Motors has three plants. Plant 1 produces 35% of the car output, plant 2 produces 20% and plant 3 produces the remaining 45%. One percent of the output of plant 1 is defective, 1.8% of the output of plant 2 is defective and 2% of the output of plant 3 is defective. The annual total production of Quality Motors is 1,000,000 cars. A car chosen at random from the annual output and is found defection. What is the probability that it came from plant 2?
A. 0.35 B. 0.559 C. 0.224 D. 0.217