Let Z be a standard normal variable. Find P(-0.86 < Z < 2.25). a) 0.1980
b) 0.7929
c) 0.7898
d) 0.7884
e) 0.7742
f) None of the above.

Which of the following is the equation of a line that passes through the point (1,4) and is parallel to the x-axis a. y=1 b. y=4 c. x=1 d. x=4

Whats the name of the vertical axis

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]