Perform the indicated operation. - 

A.
B.
C.
D.


Answer: B

Mathematics

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Solve the system of equations. x - y + 4z = 14x + z = 0 x + 4y + z = -4

A. x = 0, y = -1, z = 1 B. x = 0, y = -1, z = 0 C. x = 0, y = 0, z = -1 D. Inconsistent

Mathematics

Divide, if possible.-63 ÷ (-9)

A. 8 B. 7 C. -7 D. -8

Mathematics

Find an equation of the parabola described.Focus at (-3, 0); directrix the line x = 3

A. y2 = 12x B. y2 = -12x C. y2 = -3x D. x2 = -12y

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Solve the inequality. Write the solution set in interval notation. ? 0

A.  
B. (-7, 7)
C.  ? (7, ?)
D. (-?, 7) ? (7, ?)

Mathematics