Find the period of the function.y = cos 3x
A. 1
B. 2?
C. 3
D. 
Answer: D
Mathematics
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Determine whether or not the triangles are similar.
A. Not similar B. Similar
Mathematics
Find the inverse, if it exists, for the matrix.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.One maid can clean the house in 8 hours. Another maid can do the job in 6 hours. How long will it take them to do the job working together?
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics