12.6a04 Find the indicated probability.
If P(A) = 0.2, P(A or B) = 0.5, and P(A and B) = 0.3, find P(B).
f
Select one:
a. P(B) = 0.4
b. P(B) = 0.8
c. P(B) = 0.6
d. P(B) = 0.7

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters