Adrian is training for a 5K race. She ran 5.5 miles the first week, 7.25 miles the second week and 10 miles the third week. On the average, how many miles did she run per week? Round to the nearest hundredth. HELP PLZ

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

Correct answer brainliest asap an d 99 pointsss what are relative frequencies to the nearest hundredth of the columns of two way table column a 102, 18 colunm b 34, 14 answers choices 0.15 0.25 0.29 0.44 0.56 0.71 0.75 0.85

How can you construct perpendicular lines and prove theorems about perpendicular lines