A. the record for boston marathon‘s wheelchair division is one hour 18 minutes and 27 seconds eight the boston marathon is 26.2 miles long what was the average speed of the record winner of the wheelchair division round to the nearest hundreds
b. at this rate about how long would it take this competitor to complete a 30 mile race

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15