What is the difference of 6 - 3 1/2

Angela rode his bike around a bike trail that was 1/4 of a mile long he rode his bike around the trail 8 * angelo says he wrote a total of 8/4 miles to russell says he's wrong and he actually and says that he actually wrote to my who is corrupt use words and trying to explain how you know.

Hdtv screens usually have a width-to -height ratio of 16: 9. which screen dimensions are in the same proportion?

Find the area of right triangle abc.