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anonymous
 one year ago
HELP!!!!!
Arrange the circles (represented by their equations in general form) in ascending order of their radius lengths.
x2 + y2 − 2x + 2y − 1 = 0
x2 + y2 − 4x + 4y − 10 = 0
x2 + y2 − 8x − 6y − 20 = 0
4x2 + 4y2 + 16x + 24y − 40 = 0
5x2 + 5y2 − 20x + 30y + 40 = 0
2x2 + 2y2 − 28x − 32y − 8 = 0
x2 + y2 + 12x − 2y − 9 = 0
anonymous
 one year ago
HELP!!!!! Arrange the circles (represented by their equations in general form) in ascending order of their radius lengths. x2 + y2 − 2x + 2y − 1 = 0 x2 + y2 − 4x + 4y − 10 = 0 x2 + y2 − 8x − 6y − 20 = 0 4x2 + 4y2 + 16x + 24y − 40 = 0 5x2 + 5y2 − 20x + 30y + 40 = 0 2x2 + 2y2 − 28x − 32y − 8 = 0 x2 + y2 + 12x − 2y − 9 = 0

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.0the general equation of circle is x^2 + y^2 + 2gx + 2fy + c = 0 compare your equations withe above to find the values of g, f and c the radius of the circle will be sqrt(g^2 + f^2  c)

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0for example the radius of first one is sqrt(1^2 + (1)^2  (1)) = sqrt 3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but its asking for assending radius form

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0or their radius lengths

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0yes well find the radii of all 7 equations first then you can arrange them in the correct order

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0do you see how i got g = 1 and f = 1?
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