The joint density function of x and y is given by f(x, y) = xe^(-x(y+1)) x> 0, y > 0

a. by just looking at f(x, y), say if x and y are independent or not. explain.

b. find the conditional density of x, given y=y. in other words, fx|y(x|y).

c. find the conditional density of y, given x=x.

That table shows measurements (in invhes$ from cubes with different side lengths. which pairs of variables have a linear relationship? check all that apply

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?