Solve the system of equations.  6y + w = -31  x + y + 6z - w = 12  6x + z + 6w = 20  x + y + 4z = 7

A. (4, -5, 8, -1)
B. (4, -30, 4, -2)
C. (24, -30, 8, -6)
D. (4, -5, 2, -1)


Answer: D

Mathematics

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A. Axis of symmetry is x = -1.

B. Axis of symmetry is y = -1.

C. Axis of symmetry is y = 1.

D. Axis of symmetry is x = 1.

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A.
B.
C.
D. 6x + 2

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Provide the requested response.For the viewing rectangle [1970, 2010, 10] by [13,000, 24,000, 1000] , state the number of tick marks on the positive y-axis.

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Mathematics