<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:
<u>7</u>5,575 - ten-thousands place; this 7 is worth 70,000
7<u>5</u>,575 - thousands place; this 5 is worth 5,000
75,<u>5</u>75 - hundreds place; this 5 is worth 500
75,5<u>7</u>5 - tens place; this 7 is worth 70
75,57<u>5</u> - ones place; this 5 is worth 5
Answer:
The player answer correctly 30 questions
Step-by-step explanation:
First we have to develop the information that gives us as 2 equations
x = correct answer
y = incorrect answer
z = score = 40
h = total answer = 50
2x - y = z x + y = h
2x - y = 40 x + y = 50
we clear the x of one equation and replace the value of x in the other equation
x = 50 - y
2x - y = 40
2(50 - y) - y = 40
100 - 2y - y = 40
-3y = 40 -100
y = -60/-3
y = 20
x = 50 - y
x = 50 - 20
x = 30
I don't know the answer because i don't know the question
if you can simplify the question
Answer:
I'm pretty sure the answer is A) Dilation.
