Solve.x - y + z = 22y + z = 12 z = 6

A. (0 , 4, 6)
B. (-1 , 3, 6)
C. (0 , -4, 6)
D. (-1 , -3, 6)


Answer: B

Mathematics

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A. mean: 36.8; median: 40; no mode B. mean: 40; median: 41; no mode C. mean: 36.8; median: 40.5; mode: 40 D. mean: 36.8; no median; mode: 36

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Solve the problem.A machine produces open boxes using square sheets of plastic. The machine cuts equal-sized squares measuring 4 inches on a side from each corner of the sheet, and then shapes the plastic into an open box by turning up the sides. If each box must have a volume of 1600 cubic inches, find the length of one side of the open box.

A. 19 in. B. 24 in. C. 28 in. D. 20 in.

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Write the polynomial in descending order.-a2 + 5 - a4

A. 5 - a4 - a2 B. -a4 - a2 + 5 C. -a2 - a4 + 5 D. 5 - a2 - a4

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Find the x- and y-intercepts. If no x-intercepts exist, state so.f(x) = x2 + 6x + 9

A. (-3, 0), (0, 9) B. (9, 0), (0, -3) C. (9, 0), (0, 3) D. (3, 0), (0, 9)

Mathematics