Find the derivative of y with respect to the appropriate variable.y = 5 tanh-1 (cos x)
A. ln 
sin x
B. 
C. 
D. 
Answer: D
Mathematics
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Find the cardinal number of the indicated set by referring to the given table.A - (F ? S),given the following table:
A. 175 B. 999 C. 759 D. 888
Mathematics
Find the product.(10x - 9y)2
A. 100x2 + 81y2 B. 10x2 + 81y2 C. 10x2 - 180xy + 81y2 D. 100x2 - 180xy + 81y2
Mathematics
Simplify the rational expression. If the expression is already in simplest form, state this as your answer.
A. - 
B. - 
C. - 
D. simplest form
Mathematics
Use the formula for the sum of the first n terms of an arithmetic sequence to find the indicated sum.
A. 4446 B. 4602 C. 4738.5 D. 4329
Mathematics