Solve the system.7x - y = 7-14x +2y = -14

A. {(x, 14x - 7)}
B. {(x, 7x - 7)}
C. ?
D. {(x, 7 - 7x)}

Answer: B

Mathematics

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

A. Fx(-5, 6) = - , Fy(-5, 6) = - 
B. Fx(-5, 6) = - , Fy(-5, 6) = - 
C. Fx(-5, 6) = - , Fy(-5, 6) = 
D. Fx(-5, 6) = - , Fy(-5, 6) = - 

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Mathematics

Solve the problem.Find k such that the line kx + 15y = 4 is perpendicular to the line through (5, -8) and (-2, -4).

A. k = -26.25 B. k = -33.75 C. k = 26.25 D. k = 33.75

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Find all values that make the expression undefined.

A. 0 B. 3 C. -5 D. 15

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Mathematics

Change the decimal into a proper fraction or mixed number. Simplify if necessary. 0.44

A.
B.
C.
D.

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Mathematics