Nếu hàm số y= f(x) đồng biến trên khoảng (-1;2) thì hàm số y=f(x+2) đồng biến trên khoảng nào trong các khoảng sau đây?

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?

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