Use the even-odd identities to find the exact value of the expression. cos (-60°)
A. - 
B. 
C. 
D. - 
Answer: C
Mathematics
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Find a formula for the inverse of the function described below.A size 48 dress in Country C is size 8 in Country D. A function that converts dress sizes in Country C to those in Country D is 
A. f-1(x) = x + 16 B. f-1(x) = 2(x + 16) C. f-1(x) = 2x + 16 D. f-1(x) = 2(x - 16)
Mathematics
Use logarithmic differentiation to find the derivative of y with respect to the independent variable.y = xln x
A. 
2
B. xln x - 1ln x
C. 
D. 2xln x - 1ln x
Mathematics
True or false?When using a truth table, the statement q ? ~p is equivalent to ~p ? ~q.
A. True B. False
Mathematics
Find the greatest common factor of the numbers.108 and 72
A. 12 B. 36 C. 34 D. 18
Mathematics