Simplify. Combine like terms if possible.-4x - 5y
A. -9(x + y)
B. -4x - 5y
C. -9xy
D. -2xy
Answer: B
Mathematics
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Find the vertices of the ellipse.3x2 + 5y2 - 24x + 60y + 213 = 0
A. (-6.2, 6), (-1.8, 6) B. (6.2, -6), (1.8, -6) C. (5.4, -6), (2.6, -6) D. (-2.6, 6), (-5.4, 6)
Mathematics
Solve the problem.If u = 
, v = 
, and w = 
, evaluate u ? v - u ? w.
A. -2 B. 30 C. 7 D. 3
Mathematics
Fill in the blank with one of the words or phrases listed below.
The symbol 
means is less than.
A. equivalent B. like C. > D. <
Mathematics
Solve using Cramer's rule. 9x - 4y - 3z = 48-8x + 9y - 4z = -73-7x - 7y - 5z = -119
A. (3, 7, 3) B. (10, 1, 7) C. (9, -3, -7) D. (9, 3, 7)
Mathematics