10, 15, 8, 12, 18, 17, 20 find the mean number of movies that the students saw. if necessary, round your answer to the nearest tenth.

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p. mc) knowing that it is going to rain tomorrow, and going to bed before 9 p. md) knowing that you have a test in school tomorrow, and studying thw night before

Two trains leave stations 546 miles apart at the same time and travel toward each other. one train travels at 95 miles per hour while the other travels at 115 miles per hour l. how long will it take for the two trains to meet