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
Answer: A
Mathematics
You might also like to view...
Graph the inverse of the function plotted, on the same set of axes. Use a dashed curve for the inverse.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem. Assume that simple interest is being calculated in each case. Round your answer to the nearest cent if necessary.Aubrey borrows $3000 and agrees to pay it back in 9 years. If the simple interest rate is 9%, find the total amount she pays back.
A. $27,300.00 B. $2430.00 C. $24,300.00 D. $5430.00
Mathematics
Factor completely.49(x + 3)2 - 4y2
A. 
B. 
C. 
D. 
Mathematics
Calculate.7 ? 5 - (23 - 5) ÷ 2 - (9 - 7)
A. 1 B. 15 C. 24 D. 10
Mathematics