What is the distance between a and b on the number line below? !
0.55
0.65
2.48
4.85

Which system of linear inequalities is represented by the graph? !

What are the sotions to the quadratic equation 9x^2=4

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]