Answer:
(6, 9 ) and r = 3
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
Given
x² + y² - 12x - 18y + 108 = 0
Rearrange the x- terms and the y- terms together and subtract 108 from both sides, that is
x² - 12x + y² - 18y = - 108
To obtain standard form use the method of completing the square
add ( half the coefficient of the x and y terms )² to both sides
x² + 2(- 6)x + 36 + y² + 2(- 9)y + 81 = - 108 + 36 + 81
(x - 6)² + (y - 9)² = 9 ← in standard form
with centre = (6, 9 ) and r =
= 3
Parenthasees
the first onewould evaluate to 4x²
the 2nd one would just be -2x²
Answer:sorry homie slice
Step-by-step explanation:
Answer:
The answer is "
"
Step-by-step explanation:
In point a:
The requires 1 genin, 1 chunin , and 1 jonin to shape a complete team but we all recognize that each nation's team is comprised of 1 genin, 1 chunin, and 1 jonin.
They can now pick 1 genin from a certain matter of national with the value:

They can pick 1 Chunin form of the matter of national with the value:

They have the option to pick 1 join from of the country team with such a probability: 
And we can make the country teams:
different forms. Its chances of choosing a team full in the process described also are:
In point b:
In this scenario, one of the 3 professional sides can either choose 3 genins or 3 chunines or 3 joniners. So, that we can form three groups that contain the same ninjas (either 3 genin or 3 chunin or 3 jonin).
Its likelihood that even a specific nation team ninja would be chosen is now: 
Its odds of choosing the same rank ninja in such a different country team are: 
The likelihood of choosing the same level Ninja from the residual matter of national is:
Therefore, all 3 selected ninjas are likely the same grade: 