Factor, if possible.729 - x3
A. (9 - x)(81 + 9x + x2)
B. (9 - x)(81 + x2)
C. (9 + x)(81 - 9x + x2)
D. (9 - x)(81 - 9x + x2)
Answer: A
Mathematics
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Evaluate the integral.
dx
A. 
B. 
C. 
D. 
Mathematics
Write the negation of the conditional. Use the fact that the negation of p ? q is p ? ~q.If 7x + 2y > 6, the answer is "Sea."
A. 7x + 2y ? 6 and the answer is not "Sea." B. 7x + 2y > 6 and the answer is not "Sea." C. If 7x + 2y > 6, the answer is not "Sea." D. 7x + 2y > -6 so the answer is not "Sea."
Mathematics
Find the quotient.
A. -320
B. -4
C. 4
D. 
Mathematics
Estimate the sum as indicated. Then answer the question.Estimate the following sum by first rounding to the nearest ten. Does the estimate give you reason to doubt the stated sum?
A. Estimate: 200 ; yes B. Estimate: 210 ; yes C. Estimate: 210 ; no D. Estimate: 200 ; no
Mathematics