Determine whether the statement is true or false.cos 195° = 2 cos 225° cos 30° + 2 sin 225° sin 30°
A. True
B. False
Answer: B
Mathematics
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For the pair of functions, find the indicated composition.f(x) = 
, g(x) = 
Find (f ? g)(x).
A. 
B. 
C. 
D. 
Mathematics
Let U = {1, 2, 4, 5, a, b, c, d, e}. Find the complement of the set.C = {1, 2, 5, b, d}
A. {4, a, c, e} B. {3, 4, a, c, e} C. {3, 4, a, b, c, e} D. {4, a, b, c, e}
Mathematics
Solve the problem.How many different three-number "combinations" are possible on a combination lock having 22 numbers on its dial? Assume that no numbers repeat. (Combination locks are really permutation locks.)
A. 9240 B. 351,120 C. 1,053,400 D. 175,560
Mathematics
Find the exact value of the logarithmic expression.log8 
A. -2 B. -8 C. 2 D. 8
Mathematics