Solve the system of equations.5x1 + 2x2 + x3 = -112x1 - 3x2 - x3 = 177x1 + x2 + 2x3 = -4
A. (-3, 0, 4)
B. (3, 0, -4)
C. (0, -6, 1)
D. (0, 6, -1)
Answer: C
Mathematics
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m(?A) = 130.3º and m(?B) = 40.3º.
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Mathematics
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= 321 terms
A. 311,370 B. 155,685 C. 308,800 D. 154,400 E. none of these
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Use the graph to answer the question. 
Which month in 2006 had the lowest sales?
A. Month 8 B. Month 2 C. Month 3 D. Month 6
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Solve the problem.Write the simplified expression for the area of the rectangle.
A. x + 9 B. 2x + 18 C. 2x + 7 D. 2x + 14
Mathematics