Solve the system of equations by Gaussian elimination. If there is an unlimited number of solutions, find two of them. 8x - y + 7z = 54-3x - 2z = -18 4y + z = 22
A. x = -2, y = 4, z = 4
B. x = 2, y = 4, z = 6
C. x = 2, y = 6, z = 4
D. Inconsistent
Answer: B
Mathematics
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A. - 
B. x3/2y17/8
C. 
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? 
A. 5m
B. 
C. 
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Find a unit vector in the direction of the given vector.
?
?
A. ?
B. ?
C. ?
D. 
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Mathematics