Solve the system of equations.x - y + z = 0x + y + z = 2x + y - z = 4
A. {(2, -1, 1)}
B. ?
C. {(-1, 2, 1)}
D. {(2, 1, -1)}
Answer: D
Mathematics
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Perform the division.
A. m - 3
B. 7m - 3 + 
C. 7m + 3
D. 7m - 3
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Write the partial fraction decomposition of the rational expression.
A. 
+ 
+ 
B. 
+ 
+ 
C. 
+ 
+ 
D. 
+ 
+ 
Mathematics
Solve the problem. Round your answer to the nearest tenth.A person is pulling a freight cart with a force of 45 pounds. How much work is done in moving the cart 70 feet if the cart's handle makes an angle of 31° with the ground?
A. 1622.4 ft-lb B. 2700.1 ft-lb C. 2831.2 ft-lb D. 162.2 ft-lb
Mathematics
Write out the sum. Do not evaluate.
A. 8 + 9 + 10 + 11 B. 5 + 6 + 7 + 8 + . . . C. 4 + 5 + 6 + 7 D. 5 + 6 + 7 + 8
Mathematics