In the diagram, p1p2 and q1q2are the perpendicular bisectors of ab and bc, respectively. a1a2 and b1b2 are the angle bisectors of∠a and∠b, respectively. what is the center of the circumscribed circle of δabc?
p
q
r
s

In the final round of trivia competition, contestants were asked to name as many states that begin with the letter m as they could in 15 seconds. the bar graph shows the number of states the contestants were able to name. how many contestants participated in the final round of the competition? a) 6 b) 8 c) 14 d) 20

The sum of two numbers is 12 and their difference is 18 what are the two numbers

50 points~ ! i have to turn this in tomarrow