Solve the system.2w + x - 3y + z = -7-w + 2x + y - 2z = 35w - x + 2y + 3z = 16 w + x - 2y - z = 0
A. (4, -4, 0, 4)
B. (4, -2, 3, -4)
C. (-4, -3, 6, 4)
D. (-2, 3, 4, 1)
Answer: B
Mathematics
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Find an equation for the ellipse described.Center (0, 0); major axis horizontal with length 18; length of minor axis is 16
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Multiply.(13p + 6)(13p - 6)
A. 169p2 + 156p - 36 B. 169p2 - 36 C. p2 - 36 D. 169p2 - 156p - 36
Mathematics
Simplify.
2
A. 
B. 
C. 
D. 
Mathematics
Subtract the fractions. Write the answer in lowest terms.
A. 
B. 
C. 
D. 
Mathematics