A120120-inch pipepipe is cut into two pieces. one piece is fourfour times the length of the other. find the lengths of the two pieces.

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Which function has the domain x> -11?

The coverage of a base station of a telecommunication company forms a disk with a radius of (kilometers). let be the distance of a cellphone from a base station. assume that the location of cellphones in use are randomly uniformly distributed within the disk. calculate the mean and variance for the random variable.