In a change jar, tom has nickels and dimes. the number of nickels is two times the number of dimes and the total amount of money in the jar is $1.20. how many dimes are in the jar? a) 6 b)12 c)10 d)24

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%