Solve the linear system by using an inverse matrix.
A. {(1, -5)}
B. {(-1, 5)}
C. {(-5, 1)}
D. {(5, -1)}
Answer: C
Mathematics
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B. 
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A. 
B. 
C. 
D. 
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Complete.540 sec = min
A. 22 B. 4 C. 16 D. 9
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Solve the system by the substitution method.
A. {(-8, 62), (5, 23)} B. {(8, 62), (-5, 23)} C. {(8, 66), (-5, 27)} D. {(-8, 62), (-5, 23)}
Mathematics