Find the sum of 6 + (-2. 1/2) using a number line below -10 -9 -8 -7 -6 -5 -4 -3 -2 -1. 0. 1. 2. 3. 4 5. 6. 7 8 9 10

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]

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.

What number gives you a irrational number when added to 2/5