A college received 90% of its order of laptop keyboards from a vendor. Some of the keyboards were defective. The equation below represents this

situation, where x represents the total number of keyboards ordered and y

represents the number of keyboards that were non-defective. y = 0.9x -

1/18(0.9x) If the college ordered 200 keyboards, how many non-defective

keyboards did the college receive?*

The numbers on a football field indicate 10 yard increments. you walk around the perimeter of a football field between the pylons. you walk a distance of 30623 yards. find the area and perimeter of the indicated regions. write your answers as mixed numbers, if necessary. a. one end zone: perimeter: yd area: yd2 b. the playing field (not including end zones): perimeter: yd area: yd2 c. the playing field (including end zones): perimeter: yd area: yd2