What is the mean of 4,4,2,1,4

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

Find cot x if sin x cot x csc x = √2

Shannon drove for 540 minutes. if she traveled 65 miles per hour,how many total miles did she travel?