SOLUTION: In the sports league of n team s in which each team plays every other team twice, the total number of N of games to be played is given by N=n^2-n. How many teams are in a softball

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: In the sports league of n team s in which each team plays every other team twice, the total number of N of games to be played is given by N=n^2-n. How many teams are in a softball       Log On


   

Question 157324: In the sports league of n team s in which each team plays every other team twice, the total number of N of games to be played is given by N=n^2-n. How many teams are in a softball league if the number of games played is 42?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
42=n^2-n
n^2-n-42=0
(n-7)(n+6)=0
n-7=0
n=7 number of games