Refer to Exercises 5.7, 5.25, and 5.51. Let Y1 and Y2 have joint density function f (y1, y2) = e−(y1+y2) , y1 > 0, y2 > 0 0, elsewhere. 262 Chapter 5 Multivariate Probability Distributions a What are E(Y1 + Y2) and V(Y1 + Y2)? b What is P(Y1 − Y2 > 3)? c What is P(Y1 − Y2 < −3)? d What are E(Y1 − Y2) and V(Y1 − Y2)? e What do you notice about V(Y1 + Y2) and V(Y1 − Y2)?

a. 74 degrees

step-by-step explanation:

because the lines through the side and the box in the corners shows that these are congruent triangles and since they are mirrored the 37 degrees is also mirrored so the answer is 37 * 2 which is 74.

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0

0.6

39mph

step-by-step explanation: