Add or subtract as indicated. Simplify the result whenever possible. Write any answer that contains an improper fraction as a mixed number.
+ 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Change to a mixed number.
A. 8
B. 7
C. 7
D. 6
Mathematics
Simplify. Assume all variables and radicands represent nonnegative real numbers.
A. 3xy
B. 3x
C. 3x2 
D. 3xy2 
Mathematics
Find the vertex, focus, and directrix of the parabola.x2 = 8y
A. vertex: (0, 0)
focus: (-2, 0)
directrix: x = 2
B. vertex: (0, 0)
focus: (2, 0)
directrix: x = -2
C. vertex: (0, 0)
focus: (0, 2)
directrix: y = -2
D. vertex: (0, 0)
focus: (0, -2)
directrix: y = 2
Mathematics
Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.6z2 - 5z - 6
A. prime B. (6z + 2)(z - 3) C. (3z + 2)(2z - 3) D. (3z - 2)(2z + 3)
Mathematics