A sphere has a diameter of 12ft what is the volume of the sphere? give the exact value in terms of pi

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

Find the nonpermissible replacement for binthis expression.b2/5b +5