URGENT NEED HELP A polygon has vertices whose coordinates are A(1,4), B(4, -1), C(-1,-4), and D(-4,1). Use the midpoint formula to
determine whether or not the diagonals of polygon ABCD bisect each other. In your final answer, include all of your
calculations.

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

What is 0.368,0.380,0.365,and 0.383 in order from least to greatest

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).