Identify the equation as either an identity or not.sin 2x sin 2y = cos2(x + y) - cos2(x - y)
A. Not an identity
B. Identity
Answer: A
Mathematics
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Give the coordinates of the points shown on the graph.
A. A = (7, 4), B = (6, -4) B. A = (4, 30), B = (6, -4) C. A = (7, 4), B = (-4, 6) D. A = (7, 6), B = (4, 6)
Mathematics
Solve the compound inequality.6x - 2 > 1 or - 
x ? 3
A. 
B. (-?, -9] ? 
C. No solution
D. [-9, ?)
Mathematics
Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.logb
A. logb x + logb y7 - logb z4 B. logb x + logb y7 + logb z4 C. logb x + 7 logb y - 4 logb z D. logb x + 7 logb y + 4 logb z
Mathematics
Solve the problem.A musician plans to perform 6 selections. In how many ways can she arrange the musical selections?
A. 360 B. 720 C. 72 D. 36
Mathematics