If cos (0) = -2/3 and 0 lies in quadrant II, find the value of cot0

If $740 is invested at an interest rate of 11% per year and is compounded continuously, how much will the investment be worth in 7 years? use the continuous compound interest formula a = pert.

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?