Subtract the real numbers. Write any improper fraction as a whole or mixed number where appropriate.-23 - 11
A. -12
B. -34
C. 34
D. 12
Answer: B
Mathematics
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Find the volume of the indicated region.the region bounded by the paraboloid 
and the cylinder 
A. 1944? B. 1728? C. 432? D. 648?
Mathematics
Solve the problem.Assume that the volume of the earth is 5 × 1014 cubic meters and the volume of a bacterium is 2.5 × 10-16 cubic meters. If the earth could be filled with bacteria, how many would it contain?
A. 5.0 × 1031 bacteria B. 2.0 × 1030 bacteria C. 5.0 × 10-31 bacteria D. 2.0 × 10-30 bacteria
Mathematics
Evaluate.-19 + (-10) + (-10) + 21
A. 60 B. 22 C. -18 D. 18
Mathematics
Solve. x + 4y + 3z = -5 2y + 3z = -8 z = -2
A. (-2, 5, -1) B. (5, -2, -1) C. (-2, -1, 5) D. (5, -1, -2)
Mathematics