Jenn has 13 fewer marbles then Marty. she has 20 marbles. which equation can be solved to find how many marbles Marty has?

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?