The triangle (call it <em>T </em>) has base and height 4, so its area is 1/2*4*4 = 8. Then the joint density function is
where <em>T</em> is the set
(a) I've attached an image of the integration region.
(b) <em>X</em> and <em>Y</em> are independent if the joint distribution is equal to the product of their marginal distributions.
Get the marginal distributions of one random variable by integrating the joint density over all values of the other variable:
Clearly, , so they are not independent.
Since Molly can make 4 pancakes in 6 minutes if you divide 60 by 6 you get 10 so Molly can make 10 pancakes every hour
That is not a complete question???
3 + 2k
This is because multiplying by 1/5 is like dividing each term by 5