Johnny ran 3/4 of an hour and angie ran 2/3 of an hour how much more did johnny run

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10

Secant ac and bd intersect at point e inside f what is the measure of aed if measurements cd equals 30 a b is 50 and cb is 170

Acircle has a circumference of 7.850 units. what is its radius?