Jonathan has taken up the hobby of running recently. He initially started with a 15 minute mile. However, after a month of training, he's found his mile time is 2/3rds of his original time. If
he wants to further reduce his mile time by 20%, how long will it take for him to run a mile?

Which ratio is equivalent to 10: 85

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

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.