<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: 25°
Step-by-step explanation:
From the question, Toothy the crocodile wants to eat a delicious chicken and his mouth is open to an angle of 30 degrees but he needs to open his mouth to the angle of 55 degrees for the chicken to fit.
The additional angle that Toothy's mouth needs to be open so he can eat the chicken will be:
= 55° - 30°
= 25°
Answer:
It is 6%
Explanation:
The stock that is bought by Rick Mendez: 5,000
Own money used to buy: 2,500
Borrowed money: 2,500
Interest on borrowed money : 30
Brokerage commissions: 300
The stock is sold after one month: 5,650
Now first calculate the net profit = Selling price of stock – cost price of stock – Interest on borrowing – commission
5,650-5,000-30-300=320
Now calculate the rate of return = Net profit / cost of stock
320/5,000=.06
.06 or 6%
