Why calculate the variance covariance matrix for a portfolio

Write a fraction greater than 1 for 5 using 5 as the denominator.

Craig carried the football two times for a total of - 2 yards. He carried the football for 3 yards on his first carry. What is the number of yards that Craig carried the football on his second carry?

Jenny has 4 dollar bills, 2 quarters, 1 dime, and 3 pennies. When this amount of money is written as a decimal in terms of dollars, which digit is in tenths place? a) 3; b) 6; c) 4; d) 5

What is 3/8 plus 1/12

Mr. Cole purchased oranges at a farmer's market. He paid $5.76 for 3.2 pounds of oranges. How much did Mr. Cole pay for each pound of oranges?

find the value of k for which the following system of equations has a unique solutions 1. kx + 2y = 5, 3x+y=1

Is 7.0 a rational or a whole

If a = 6 and b=2 then what does a^b equal

There were four beagles and three golden retrievers what's the part to part ratio

a pile of 12 books is 1.2 meter thick 9 of them are 9.5 centimeters thick each and the rest are of equal thickness. for the rest of the books, how thick is each of them in centimeter?