what are 3 decimals that are the same/equivalent to 6 x 1 +4 x 1/10 (its for my little sister please give me and answer)

Hey peoples! im bored add me on discord xd emmy#1782 < 3

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%

Set up and solve a proportion for the following application problem. if 55 pounds of grass seed cover 404 square feet, how many pounds are needed for 7272 square feet?