Solve by the substitution method.8x + 7y = -7 -6x - 4y = 4

A. (0, 0)
B. (-1, 0)
C. (-7, 4)
D. (0, -1)

Answer: D

Mathematics

Find the value.If F(x, y) = tan-1 , find Fx(-5, 6) and Fy(-5, 6).

A. F_x(-5, 6) = - , F_y(-5, 6) = -
B. F_x(-5, 6) = - , F_y(-5, 6) = -
C. F_x(-5, 6) = - , F_y(-5, 6) =
D. F_x(-5, 6) = - , F_y(-5, 6) = -

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Mathematics

Use the theorem on bounds to establish the best integral bounds for the roots of the equation.-7x4 - 2x3 + 6x + 9 = 0

A. -1 < x < 2 B. -1 < x < 1 C. No bound can be determined. D. -2 < x < 2

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Mathematics

Find the prime factorization of the number.79

A. 79 ? 1 B. 40 ? 2 C. 39 ? 79 D. 79

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Mathematics

Solve.3z2 - 192 = 0

A. 9, -9
B. 8, -8
C.
D. 8

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Mathematics