Let the joint pdf of x and y be f (x, y) = 12e−4x−3 y , x > 0, y > 0. a. find the marginal pdf ’s of x and y. b. are x and y independent? c. find the conditional pdf f1(x|y). d. find the marginal cdf ’s of x and y. e. find p(1 < y < 3). f. find p(1 < y < 3|x = 3). g. find p(x > 2, 1 < y < 3).

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

answer: i could not see part the question so ill explain how to get the answer

step-by-step explanation: for instance the distance she travele d is 10 and she traveled the same amout each mile so do 10 divided by how many miles she drove each time and you ge your answer.

where does the z at is it on the x axes or on the y axes any way if it is on the y axes put it horizontally and if it is on the x axes put it vertically