Decide whether or not the events are commutative.22 - (7 - 6) and (22 - 7) - 6
A. No
B. Yes
Answer: A
Mathematics
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Determine the center (or vertex if the curve is a parabola) of the given curve.16x2 - y2 - 32x + 8y - 16 = 0
A. (1, 4) B. (1, -4) C. (-1, 4) D. (-1, -4)
Mathematics
Solve the system of equations.5x + 2y + z = -112x - 3y - z = 177x + y + 2z = -4
A. (0, 6, -1) B. (-3, 0, 4) C. (3, 0, -4) D. (0, -6, 1)
Mathematics
Solve the compound inequality. Express the solution using interval notation. Graph the solution set.7 ? 5t - 3 ? 22
A. [2, 5]
B. [-5, -2]
C. (-5, -2)
D. (2, 5)
Mathematics
Find the domain of the rational expression. 
A. {x|x is a real number and x ? 1 and x ? 7} B. {x|x is a real number and x ? -1 and x ? -7} C. {x|x is a real number and x ? 1 and x ? -7 and x ? 7} D. {x|x is a real number and x ? -1 and x ? -7 and x ? 7}
Mathematics