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
Mathematics
Solve the inequality. Write the solution set in interval notation.
? 0
A. 
B. (-7, 7)
C. 
? (7, ?)
D. (-?, 7) ? (7, ?)
Mathematics