Solve the equation.-x = 39
A. {0}
B. {1}
C. {39}
D. {-39}
Answer: D
Mathematics
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Simplify. Assume all variables and radicands represent nonnegative real numbers.
A. 3xy
B. 3x
C. 3x2 
D. 3xy2 
Mathematics
Determine where the function is increasing and where it is decreasing.f(x) = x2 - 4x + 3
A. increasing on (2, ?) decreasing on (-?, 2) B. increasing on (-?, -1) decreasing on (-1, ?) C. increasing on (-1, ?) decreasing on (-?, -1) D. increasing on (-?, 2) decreasing on (2, ?)
Mathematics
Write the complex number in the form a + bi.4 + 
A. 4 + 4i
B. 4 - 4i
C. 4 + 4i
D. 4 + 4
Mathematics
Find the exact value of the composition.sin (arctan (2))
A. 
B. 
C. 5
D. 2
Mathematics