Solve the system of equations by using an inverse matrix.2x + y - 2z - w = 9 -x - 2y + z + 2w = -3 -2x - 2y + 2z + w = -10 -2x - y - z + 2w = -1
A. (1, 2, -1, 0)
B. (3, 1, -2, 2)
C. ?
D. (3, -1, 2, -2)
Answer: B
Mathematics
You might also like to view...
Solve the problem.Find the volume of the region bounded below by the xy-plane, laterally by the cylinder 
and above by the plane 
.
A. 256? B. 64? C. 8? D. 32?
Mathematics
In the strip of rectangles shown, a certain rigid motion applied to the leftmost rectangle takes the figure to the next rectangle. Apply the same motion, but to the second rectangle, to draw the image of the second rectangle in the third rectangle. Continue to use the same motion to fill in the successive rectangles.
A. 
B. 
C. 
D. 
Mathematics
Use a calculator to find y to four decimal places.
?
?
A. ?
B. ?
C. ?
D. 
E. ?
Mathematics
Solve the inequality and graph the solution.
< 
A. 
B. 
C. ?
D. 
Mathematics