Solve the problem.Find the angle ? given x = 51, y = 16, ? = 60°.
A. 17.42°
B. 42.58°
C. 12.58°
D. 120°
Answer: B
Mathematics
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Simplify the expression, and combine like terms.7(5x2 + 9y) - (4x2 - 3y)
A. 39x2 + 66y B. 31x2 + 60y C. 39x2 + 12y D. 31x2 + 66y
Mathematics
Multiply.(2k + 1)3
A. 8k3 + 12k2 + 6k + 1 B. 8k3 + 8k2 + 4k + 1 C. 8k3 + 1 D. 8k3 + 24k2 + 6k + 1
Mathematics
Solve the problem.A musician plans to perform 5 selections for a concert. If he can choose from 8 different selections, how many ways can he arrange his program?
A. 6720 B. 56 C. 32,768 D. 40
Mathematics
Match the quadratic function to the correct graph.y = -(x + 5)2 + 4
A. 
B. 
C. 
D. 
Mathematics