X P(x) 0 0.25
1 0.3
2 0.25
3 0.2

Required:
Find the standard deviation of this probability distribution.

Me n o w. i need t h i s. 10 points

What is the the greatest common factor ?

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.