Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = -2, y = -3, z = 5, w = 
; 
B. x = -2, y = 3, z = 4, w = -2; (-2, 3, 4, -2)
C. x = 
, y = - 
, z = - 
, w = - 
; 
D. x = 2, y = -3, z = -4, w = -2; (2, -3, -4, -2)
Answer: B
Mathematics
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Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.sin ? = - 
, ? in quadrant IV Find tan 2?.
A. 
B. - 
C. 
D. - 
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Match the system with the appropriate graph.A system with solution (4, 7)
A. 
B. 
C. 
D. 
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