What is the mean of 20, 37, 43, 54, 83, 102, 117, 160, 208?

The ksp expression for the system pbcl2(s) pb+2(aq) + 2 cl-(aq) is: [pbc12][pb+2][2cl-] [pb+2][cl-]2 [pb+2][2cl-]2 [pbcl2][pb+2][cl-]2 [pb+2][2cl-]2[pbcl2]

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625