Adam smith's theory of the invisible hand posits the action of independence, self-interested buyers and sellers will lead to the most efficient allocation of resources.

Bill dukes has $100,000 invested in a 2-stock portfolio. $62,500 is invested in stock x and the remainder is invested in stock y. x's beta is 1.50 and y's beta is 0.70. what is the portfolio's beta? do not round your intermediate calculations. round the final answer to 2 decimal places.

Suppose an investor starts with a portfolio consisting of one randomly selected stock. as more and more randomly selected stocks are added to the portfolio, what happens to the portfolio's risk

How do you know if two line segments are perpendicular?