Use a calculator to find the approximate value of the expression. Express your answer in radians and round to three decimal places.tan-1 (0.7847)
A. 3.807
B. 0.905
C. 2.476
D. 0.665
Answer: D
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Solve the problem.Two machines are turned on at 8:00 A.M. If one can produce 39 items each hour and the other can produce 41 items each hour, at what time will they produce a total of 480 items?
A. 2:00 P.M. B. 3:00 P.M. C. 3:30 P.M. D. 1:00 P.M.
Use Bayes' rule to find the indicated probability.Two shipments of components were received by a factory and stored in two separate bins. Shipment I has 2% of its contents defective, while shipment II has 5% of its contents defective. If it is equally likely an employee will go to either bin and select a component randomly, what is the probability that a defective component came from shipment II?
A. 0.714 B. 0.222 C. 0.5 D. 0.2
Use a calculator to evaluate the expression. 
A. 75,900,240 B. 379,501,200 C. 6,325,020 D. 3,162,510
Solve the right triangle for all missing sides and angles to the nearest tenth.
b = 20B = 17°37'
A. A = 72°23', c = 67, a = 21 B. A = 72°23', c = 21, a = 66.1 C. A = 72°23', c = 66.1, a = 21 D. A = 72°23', c = 66.1, a = 63