Question 4 (12 points)stocks a and b have the following returns in each of the states given below. boomnormal economyrecessionstock a return12%10%-5%stock b return1%-5%15%the probability of the boom is 0.5, the probability of the normal economy is 0.3 and the probability of the recession is 0.2. (a) calculate the variance of the returns of a and the variance of the returns of b(b) what is the covariance between the returns of a and b? (c) what is the standard deviation of a portfolio of a and b with equal amounts invested in both?

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2xdesmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x

What is the slope of the line that passes through the points (–9, 2) and (0, 4)? the slope of the line is

What is the best estimate of the length of a football