is a statistical method used to determine whether a relationship between variables exists. ​

John bought 5 lemons and used 2 of them for a salad how much did he use for.a salad . he used % of the lemons.

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]

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?