Find the exact value of the expression.cos-1
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the length of the curve.The spiral r = 5?2, 0 ? ? ? 2
A. 
B. 80?5
C. 
((?2 + 1)3/2 - 1)
D. 720
Mathematics
Solve the problem.How many different three-number "combinations" are possible on a combination lock having 24 numbers on its dial? Assume that no numbers repeat. (Combination locks are really permutation locks.)
A. 12,144 B. 1,530,100 C. 510,040 D. 255,020
Mathematics
Solve the problem.A force is given by the vector F = 4i + 2j. The force moves an object along a straight line from the point (10, 5) to the point (12, 14). Find the work done if the distance is measured in feet and the force is measured in pounds.
A. -26 ft-lb B. 26 ft-lb C. 40 ft-lb D. -10 ft-lb
Mathematics
Write a system of linear inequalities that has the given graph.
A. 
B. 
C. 
D. 
Mathematics