You are given following letters. A. B.C. D.E. F.GH
If you are asked to randomly choose 3 of the letters and lay it out in a sequence(order
matters). What is the total number of outcome?

If f(x)= 3x+6 which of the following is the inverse of f(x)

The interior angles formed by the sides of a hexagon have measures that sum to 720°. what is the measure of angle a? enter your answer in the box. m∠a= °

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.