Solve.x - 3y + 3z = 4 y + 4z = 0 z = -4
A. (61 , 15, -4)
B. (-61 , -15, -4)
C. (64 , 16, -4)
D. (-64 , -16, -4)
Answer: C
Mathematics
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Sketch D and g(D) from the description of D and change of variables 
x = u2 - v2, y = 2uv where D is the rectangle 0 ? u ? 1, 0 ? v ? 1
A.
 ? |  |
B.
 ? |  |
C.
 ? |  |
D.
 ? |  |
Mathematics
Find v ? u.v = 7i - 4j and u = -9
i + 9j
A. -36
+ 63
B. (7 - 9
)i + 5j
C. -36
i - 63j
D. -36 - 63
Mathematics
Find the inverse of the matrix.
A. 
B. 
C. 
D. No inverse
Mathematics
Solve and graph the inequality. Give answer in interval notation.2x + 1 ? 3x - 7
A. (-?, 8]
B. [-8, ?)
C. (-?, 2]
D. (2, ?)
Mathematics