Simplify the expression. Assume that variables represent nonzero numbers.(-2a)2
A. 4a2
B. -4a2
C. -4a
D. 4a
Answer: A
Mathematics
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Solve the problem.An election involving 5 candidates and 30 voters is held, and the results of the election are to be determined using the Borda count method. Assuming there isn't a five-way tie, the minimum number of points a winning candidate can receive is
A. 151 points. B. 31 points. C. 51 points. D. 91 points. E. none of these
Mathematics
Solve the inequality. Graph the solution set and write the solution set in set-builder notation.x2 - 3x - 10 < 0
A. {x|x < -2 or x > 5}
B. {x|x < -2}
C. {x|x > 5}
D. {x|-2 < x < 5}
Mathematics
Tell whether the statement is true or false.Let A = {3, 4, 5, 6, 7, 8}, B = {5, 7, 9}, C = {3, 4, 6, 8}, D = {3, 8}, and 
B ? C
A. True B. False
Mathematics
Find the exact value of the expression.sin
A. 1
B. 0
C. 
D. 
Mathematics