Find the derivative of y with respect to the appropriate variable.y = 9 tanh-1 (cos x)
A. ln 
sin x
B. 
C. 
D. 
Answer: C
Mathematics
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Evaluate the spherical coordinate integral.
A. 
?2
B. 
?2
C. 
?
D. 
?
Mathematics
Provide an appropriate response.An invoice of $960.00 including freight charges of $30.00 is dated June 14. If the credit terms are 3/15, N/30 and the invoice is paid on June 20, the amount due is $931.20.
A. True B. False
Mathematics
Use factoring to solve the equation.20y2 + 41y + 20 = 0
A. 
, 
B. 
, - 
C. - 
, - 
D. - 
, - 
Mathematics
Find 
.f(x) = 
A. - 
B. 0
C. - 
D. - 
Mathematics