A bicycle license uses the letters A and B and the number 4. Either of the symbols may be repeated, and every license has exactly three characters. Create a list to find the sample space. Then find the probability of a license with three letters.

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi, r^3 , where r is the sphere’s radius.

Ireally don't understand this, i'm really an idiot but i want to know how to figure this out. !