Solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.x + 3y - 2z - w = 134x + y + z + 2w = 18-3x - y - 3z - 2w = -10 x - y - 3z -2w = 6
A. {(4 + w, 2 - 2w, -2 + 2w, w)}
B. {(3, 4, -6, 3)}
C. {(13, 18, -10, 6)}
D. {(4, 2, -2, 1)}
Answer: D
Mathematics
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A. -18
B. 18
C. - 
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A. 0.000432 B. 4.32 C. 0.0432 D. 0.432
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A. 650 B. 680 C. 640 D. 610 E. none of the above
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Find the vertex of the parabola.f(x) = - 
x2 + 7x - 6
A. 
B. (21, -6)
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D. 
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