Abasketball player has a 50% chance to make a freethrow. what is the probability that he will make 2 out of 10 free throws

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

Dawn is selling her mp3 player for 3 4 of the original price. the original price for the mp3 player was $40. how much is she selling her mp3 player for?