Jase had 3 feet of tape. he cut the tape into 5 equal pieces. how long was each piece?

2 1/2
5/2
3 1/5 or 3/5

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

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%

Icould really use some with this question.