Each front tire on a particular type of vehicle is supposed to
be filled to a pressure of 26 psi. Suppose the actual air pressure
in each tire is a random variable. X for the right tire and Y for
the left tire, with joint pdf.
f(x,y) = k(x2 + y2), when 20 ≤ x ≤ 30, 20
≤ y ≤ 30, and
f(x,y) = 0 (otherwise)
A. What is the value of k.
B. what is the probability that...