Perform the operation and write the result in the standard form.(-5 - 7i) + (9 + 4i)
A. 9 - 3i
B. 4 + 3i
C. 4 - 3i
D. 9 + 3i
Answer: C
Mathematics
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A. 0.01% B. 100% C. 10% D. 0.1%
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A. 132 B. 44 C. 33 D. 154
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Remove a dominated strategy if one exists in the game. 
A.
B.
C.
D. no dominated rows or columns
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Factor by grouping.20x2 - 25xy + 12xy - 15y2
A. (5x + 3y)(4x - 5y) B. (5x - 3y)(4x - 5y) C. (5x + 3)(4x - 5) D. (20x + 3y)(x - 5y)
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