Andrew began work at 6: 45 am. he went to lunch at 11: 30 am. after lunch, andrew returned to work at 12: 30 pm and worked until 3: 15 pm. how many hours and minutes did andrew work? 3 hours, 30 minutes 7 hours, 30 minutes 8 hours, 0 minutes 8 hours, 30 minutes

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

The radius of a sphere is 3 inches. which represents the volume of the sphere?

Afriend of mine is giving a dinner party. his current wine supply includes 10 bottles of zinfandel, 8 of merlot, and 11 of cabernet (he only drinks red wine), all from different wineries. (a) if he wants to serve 3 bottles of zinfandel and serving order is important, how many ways are there to do this? ways (b) if 6 bottles of wine are to be randomly selected from the 29 for serving, how many ways are there to do this? ways (c) if 6 bottles are randomly selected, how many ways are there to obtain two bottles of each variety? ways (d) if 6 bottles are randomly selected, what is the probability that this results in two bottles of each variety being chosen? (round your answer to three decimal places.) (e) if 6 bottles are randomly selected, what is the probability that all of them are the same variety? (round your answer to three decimal places.)