Rationalize the denominator.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Evaluate the improper integral or state that it diverges.
A. 9 B. 81 C. -9 D. diverges
Mathematics
Solve the problem.A retired couple has $170,000 to invest to obtain annual income. They want some of it invested in safe Certificates of Deposit yielding 7%. The rest they want to invest in AA bonds yielding 10% per year. How much should they invest in each to realize exactly $15,800 per year?
A. $140,000 at 10% and $30,000 at 7% B. $120,000 at 7% and $50,000 at 10% C. $130,000 at 7% and $40,000 at 10% D. $130,000 at 10% and $40,000 at 7%
Mathematics
Multiply or divide as indicated. Write the answer in lowest terms.
? 
A. 
B. 
C. 1
D. 
Mathematics
Determine whether the following is a trinomial square.x2 + 16xy + 64y2
A. No B. Yes
Mathematics