Solve the system using matrices. If there is no solution or if there are infinitely many solutions and a system's equations are dependent, so state.
A. infinitely many solutions; dependent equations
B. {(2, 4)}
C. 
D. no solution or ?
Answer: D
Mathematics
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Solve the equation. 
= -6
A. 
B. 
C. 
D. ?
Mathematics
Combine like terms.9x - 3x
A. 12x B. 6x C. -27x D. 6 + x
Mathematics
Find factors or multiples as indicated for the number or numbers given.42; all factors
A. 1, 2, 3, 7, 6, 14, 28, 42 B. 1, 2, 3, 7, 6, 14, 21, 42 C. 7, 6, 14, 42 D. 1, 7, 42
Mathematics
Add.-57 + 0
A. 0 B. -57 C. -570 D. 57
Mathematics