Ithought of a number. my number doubled is 20 bigger than 200. find my number.

Ajar of gumballs contains 4 reds, 2 greens, and 6 blues. what is the probability of getting two blues in a row without replacement?

Cal's go cart has a gas tank with the dimensions shown below. he uses a gas can that holds 11 gallon of gas, to fill the go cart tank. 11 gallon = 231 inches^3 how many full gas cans will it take to fill the go cart's gas tank?

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab