George has a bookshelf with 69 books on it. he has 9 nonfiction books on the bookshelf and 60 fiction books on the bookshelf. what is the ratio of the total books on the bookshelf to the number of nonfiction books on the bookshelf? a. 3/23 b. 20/30 c. 23/3 d. 23/20

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

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