Solve the system of equations using matrices. Use Gauss-Jordan elimination.
A. {(7, 4, 5)}
B. {(7, 5, 4)}
C. {(14, 4, -7)}
D. {(-7, 4, 14)}
Answer: A
Mathematics
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A. 
B. - 
C. 
D. 
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What part of the object or set of objects is shaded?
A. 
B. 
C. 
D. 
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If possible, find the matrix product of AB.A = 
; B = 
A. AB = 
B. AB = 
C. AB = 
D. Undefined
Mathematics