What is 1/0 (insert troll face here)

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

Jack lives on a farm and has a large backyard. the area of his rectangular backyard is of a square mile. if the width of the yard is of a mile, what fraction of a mile is the length of the rectangular backyard?

10 ! in a race, nick is 50 feet in front of jay after ten seconds. how fast can nick run, if jay can run 20 feet per second?