Write a recursive sequence that represents the sequence defined by the following explicit formula: a_n=
a
n
​
=
\,\,10+4n
10+4n

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]

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).