<span>Each team in the softball league plays each of the other teams exactly once. For every game, there is 2 team playing. The order is not important because A vs B is same as B vs A
So you just need to makes a combination of 2 that have a result of 21. If there is t number of teams, the number of matches would be:
tC2 = t!/2!(t-2)! = 21
</span>t! / (t-2)! = 21 *2
(t)(t-1)= 42
t^2 -t -42=0
(t-7)(t+6)
t=7 ; t=-6
Excluding the minus result, you got 7 teams.
Answer:
y =-2 x=0
Step-by-step explanation:
put any number on x to find y
Answer:
$50
Step-by-step explanation:
12 x 30 = 360
960 - 360 = 600
600/12 = 50
Answer:
This is a binomial.
Step-by-step explanation:
Bi means two. Therefore, since this polynomial only has two integers it is a binomial.
Answer:
It depends on how many other colors there are
Step-by-step explanation:
