Aramp is 17 ft long , rises 8 ft above the floor, and covers a horizontal distance of 15 ft, as shown in the figure

Sate why the measure of angle d is 120 degrees

Question 27 of 28 1 point what is the slope of the line shown below? (3,-2) (2,-4)

The discrete random variables x and y take integer values with joint probability distribution given by f (x,y) = a(y−x+1) 0 ≤ x ≤ y ≤ 2 or =0 otherwise, where a is a constant. 1 tabulate the distribution and show that a = 0.1.2 find the marginal distributions of x and y. 3 calculate cov(x,y).4 state, giving a reason, whether x and y are independent. 5 calculate e(y|x = 1).