Solve the system of equations. If the system has infinitely many solutions, let the last variable be the arbitrary variable.x - y + 2z + w = 1y + z = 2z - w = 1
A. {(0 - 4w, 1 - w, 1 + w, w)}
B. {(-4, 0, 2, 1)}
C. {(0, 1, 1, w)}
D. ?
Answer: A
Mathematics
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Find the indicated roots.Fourth roots of -16; trigonometric form
A. 1 + i, 1 - i, -1 + i, -1 - i
B. 
+ 
i, 
- 
i, - 
+ 
i, - 
- 
i
C. 8
+ 8
i, 8
- 8
i, -8
+ 8
i, -8
- 8
i
D. 2 + i, 2 - i, -2 + i, -2 - i
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Using Green's Theorem, calculate the area of the indicated region.The area bounded above by y = 4x and below by y = 3x2
A. 
B. 
C. 
D. 
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Divide and, if possible, simplify. Assume all variables represent positive real numbers.
A. 
B. 
C. 
D. 
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Find all degree solutions to the equation.
?
?
A. 20° + 90°k, 50° + 90°k B. 50° + 90°k, 65° + 90°k C. 20° + 90°k, 70° + 90°k D. 40° + 90°k, 50° + 90°k E. 40° + 90°k, 70° + 90°k
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