Last year, frank opened an investment account with $6400 . at the end of the year, the amount in the account had increased by 29.5% . how much is this increase in dollars? how much money was in his account at the end of last year?

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

One positive number is 9 more than twice another. if their product is 95, find the numbers

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? probability distribution px(x) 6 hours 7 hours 8 hours 9 hours 10 hours 0.62 0.78 пол