Simplify the radical. Assume that all variables represent positive real numbers.
A. 
B. 20
C. 
D. 
Answer: D
Mathematics
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Find the common ratio.3, -9, 27, -81, 243, . . .
A. -3
B. 3
C. - 
D. -12
Mathematics
Perform the indicated operation
Mathematics
Solve the equation on the interval [0, 2?).cos2 x + 2 cos x + 1 = 0
A. 
, 
B. ?
C. 
, 
D. 2?
Mathematics
Multiply.(-12)(5)
A. -60 B. -65 C. -600 D. -160
Mathematics