Let the joint density function of the random variables X and Y be fX, Y px, yq " # 2xex 2´y 0 ă x ă 1, y ą x 2 0 otherwise (a) Find the marginal density function of X. (b) Find the marginal density function of Y . (c) Compute the probability PpY ă 3X2 q.

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)

the first one

step-by-step explanation:

just id the test.

too hard the other guy did it

step-by-step explanation: