Suppose the joint PDF of X and Y is given by f(x) = cxy if 0 ≤ x ≤ 2, 0 ≤ y ≤ x
0, otherwise
a) Find c.
b) Find P( ½ < X < 1)
c) Find P(Y ≥ 1)
d) Find P(½ < X < 1, Y ≥ 1)

He amount of carbon-14 present in animal bones t years after the animal's death is given by p(t)equals=upper p 0 e superscript negative 0.00012097 tp0e−0.00012097t. how old is an ivory tusk that has lost 26% of its carbon-14?

Write 17/20 as a decimal and as a percent.

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?