Solve the system of equations.5x + 2y + z = -112x - 3y - z = 177x + y + 2z = -4
A. (-3, 0, 4)
B. (0, -6, 1)
C. (0, 6, -1)
D. (3, 0, -4)
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
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Find the domain of the function.f(x) = 3 - ln(8x)
A. (-?, 3) ? (8, ?) B. (-3, 8) C. (0, ?) D. (8, ?)
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Solve the combination exercise.From 9 names on a ballot, a committee of 3 will be elected to attend a political national convention. How many different committees are possible?
A. 60,480 B. 84 C. 252 D. 504
Mathematics