Abaseball team has 2 first basemen, 3 second basemen, and 2 third basemen. how many combinations of three are possible?

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?

Which strategy is used by public health to reduce the incidence of food poisoning?

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.