Simplify by writing the expression with positive exponents. Assume that all variables represent nonzero real numbers.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve the problem.An oil storage tank can be described as the volume generated by revolving the area bounded by 
about the x-axis. Find the volume 
of the tank.
A. 2.12 m3 B. 655 m3 C. 95.4 m3 D. 31.8 m3
Mathematics
Fill in the blank with the correct inequality symbol.If - 3x < 12, then x 
-4.
A. < B. ? C. > D. ?
Mathematics
Find the dot product for the pair of vectors.
, 
A. -120 B. 270 C. -195 D. 75
Mathematics
Answer the question.Sue has taken two exams so far in her History course. Her scores are 90.8 and 68.4. What is the average of these scores?
A. 81.1 B. 84.6 C. 76.1 D. 79.6
Mathematics