Use Cramer's rule to solve the system. x + y + z - w = 6 2x - y + 3z + 4w = -4 4x + 2y - z - w = -13 -x - 2y + 4z + 3w = 12
A. 
B. 
C. 
D. Can't use Cramer's rule, D = 0
Answer: C
Mathematics
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A. 1
B. 
C. 0
D. -4
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Sketch the graph of the function.y = 3 sin 3x - 3 cos 2x
A. 
B. 
C. 
D. 
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Find the derivative of the function.
?
What will be an ideal response?
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Solve the absolute value equation.
- 1 = -5
A. 
B. 
C. 
D. ?
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