Identify the equation as either an identity or not.-2 cos 10x cos 4x = cos 7x cos 3x
A. Identity
B. Not an identity
Answer: B
Mathematics
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Find the indicated probability.The following table displays a distribution for a group of retired people by career and age at retirement. 
Suppose one of these people is selected at random. Compute the probability that the person selected was a store clerk. Round your answer to the nearest thousandth.
A. 0.099 B. 0.327 C. 0.025 D. 0.250
Mathematics
Graph the polar equation.r2 = 33 cos 4?
A. 
B. 
C. 
D. 
Mathematics
Write the mathematical expression as a phrase.9x - 6
A. 9 times the difference of x and 6 B. 9 decreased by 6 times x C. 9 times x, decreased by 6 D. 9 times x, increased by 6
Mathematics
Solve.The volume of a cube is given by 125 cm3. What is the area of each side of the cube?
A. 5 cm2 B. 21 cm2 C. 10 cm2 D. 25 cm2
Mathematics