Arianna measured a line to be 9.9 inches long. If the actual length of the line is 7.8 inches, then what was the percent error of the measurement, to the nearest tenth of a percent?

26.9%

Step-by-step explanation:

9.9-7.8=2.1

(2.1/ 7.8) •100=26.9

not enough information

step-by-step explanation:

we cannot know this, because the other students could have handed out 10 flyers, or they could have handed out 100. one way, the mean would go up, and another way, the mean would go down.