What is the radius of the circle given the equation x2 - 6x + y2 + 10y - 2 = 0

Can you guys plz answer this question in order and quickly plz i will give 30 points

Which math sentence can be used to determine if the triangle is a right triangle?

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]