One side of a rectangle is 20 mi shorter than ten times another side. Find the length of the sides, given that the area of the rectangle is 2240 mi^2. Enter both sides, separated by a comma.

Aresearch study is done to find the average age of all u.s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample