Lily and bella had an equal number of dolls at first. iris had 5 more dolls than lily. after bella gave away 10 dolls and iris gave away 9 dolls, bella had 2/5 as many dolls as iris. how many dolls did lily have

Aparallel system functions whenever at least one of its components works. consider a parallel system of n components, and suppose each component works independently with probability 0.5. find the conditional probability that component n works given that the system is working

Runner ran 1 4/5 miles on monday and 6 3/10 on tuesday. how many times her monday’s distance was her tuesdays distance

You buy 4 items that cost 2.69 14.45 8.05 13.95 what is the estimated total round to the nearest dollar