Determine if the given polar coordinates represent the same point.(3, ?/6), (-3, 7?/6)
A. No
B. Yes
Answer: B
Mathematics
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Match the graph of the function f to its inverse f-1. 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.An election is held among 21 candidates. What is the total number of pairwise comparisons in this election?
A. 
B. 212
C. 221
D. 21
E. 21 × 2
Mathematics
Factor the polynomial by substitution.10y4 - 19y2 - 15
A. (2y2 + 1)(5y2 - 15) B. (10y2 - 5)(y2 + 3) C. (5y - 3)(2y + 5) D. (2y2 - 5)(5y2 + 3)
Mathematics
?What percent of a present amount of radioactive radium 
will remain after 900 years? The half-life of radium is 1,600 years.
?
A. ?45% B. ?25% C. ?65% D. ?68%
Mathematics