Determine if the set is the empty set.{x|x is a living U.S. president born after 1700}
A. Yes, it is the empty set.
B. No, it is not the empty set.
Answer: B
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Solve the problem.Which of the lines in the picture are lines of symmetry of the given figure?
A. p and r B. No reflection symmetry C. Only r D. q and s
Find the requested part of the triangle. Round your answer to two decimal places.Find the measure of the angle A in degrees. 
A. 34.68° B. 56.62° C. 55.32° D. 54.92°
Solve the problem by writing an appropriate system of equations and using the inverse of the coefficient matrix to solve the system.The sum of the ages of Art, Ben, and Cal is 59. Art is 1 year older than Cal and Cal is 1 year younger than Ben. Which of these people were teenagers 7 years ago?
A. Art, Ben, and Cal B. Ben C. Art and Ben D. Art
State the conjugate of the given binomial.6m3 - 6n3
A. -6m3 - 6n3
B. 
C. 6m3 + 6n3
D. -6m3 + 6n3