81/15 + -14/5 plz it is for a test
2 answers:
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Answer:
see explanation
Step-by-step explanation:
I will begin with part two, first.
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 - 18x + y² - 10y = - 6
Using the method of completing the square
add ( half the coefficient of the x/ y terms )² to both sides
x² + 2(- 9)x + 81 + y² + 2(- 5)y + 25 = - 6 + 81 + 25, that is
(x - 9)² + (y - 5)² = 100 ← in standard form
with centre = (9, 5 ) and r = = 10
Answer:
WHY MUST I CRYYY
Step-by-step explanation:
The formula of a distance between two points A and B is :
You should this formula by heart.
Then, you just have to apply it ! :D
Here :
Therefore :
In short, the answer would be the first option :
.
Hope this helps !
Photon
You should this formula by heart.
Then, you just have to apply it ! :D
Here :
Therefore :
In short, the answer would be the first option :
Hope this helps !
Photon