<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:
I think the Radius is 3. I'm not really sure, don't quote me on it. K?
Step-by-step explanation:
Answer:
ʍouʞ ʇ,uop ᴉ ʇnq ʎɹɹos ɯ,ᴉ
79% = 0.79= 79/100
(not sure if this is what you meant?)
8x-2=-9+7x
Add 2 to both sides
8x=-7+7x
Subtract 7x from both sides
x=-7
