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What is the centre and radius of a circle whose equation is 2x2 plus 2y2 plus 2x -6y -9?
Wiki User
∙ 7y ago
Equation of circle: 2x^2 +2y^2 -2x +2x -6y -9 = 0
Dividing all terms by 2: x^2 +y^2 +x -3y -4.5 = 0
Completing the squares: (x+0.5)^2 + (y-1.5)^2 = 7
Centre of circle is at (-0.5, 1.5) and its radius is the square root of 7
Wiki User
∙ 7y ago
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What is the equation of a circle whose centre is at -1 -7 and has a radius of 10 on the Cartesian plane?
The equation of a circle with centre (x0, y0) and radius r is given by: (x - x0)² + (y - y0)² = r² For the circle with centre (-1, -7) and radius 10 this gives: (x - -1) + (y - -7)² = 10² → (x + 1)² + (y + 7)² = 100 This can be expanded and rearranged to give: x² +2x + y² + 14y - 50 = 0
What are the center and radius of the circle defined by the equation x2 plus y2-6 plus 8y plus 210?
Without an equality sign it can't be considered to be an equation but in general the equation of a circle whose centre is at (a, b) and radius is r is:- (x-a)^2+(y-b)^2 = r^2
What is the radius for a circle whose equation is x2 plus y2 36?
If that means = 36 then then the radius of the circle is 6 units
What is the equation of a circle whose center is at the origin and whose radius is 4?
x2 + y2 = 2
What is equation of a circle whose center is at the origin?
x2 + y2 = r2, where r is the radius.
What is the Cartesian equation of a circle whose centre is in the 1st quadrant with a radius of 7 and touches the x and y axes?
Centre of the circle is at (7, 7) and its Cartesian equation is (x-7)^2 + (y-7)^2 = 49
What is the equation of a circle whose centre is at -1 -7 and has a radius of 10 on the Cartesian plane?
The equation of a circle with centre (x0, y0) and radius r is given by: (x - x0)² + (y - y0)² = r² For the circle with centre (-1, -7) and radius 10 this gives: (x - -1) + (y - -7)² = 10² → (x + 1)² + (y + 7)² = 100 This can be expanded and rearranged to give: x² +2x + y² + 14y - 50 = 0
What is the interior point of a circle?
Any point whose distance from the centre of the circle is smaller than the radius of the circle.
What are the center and radius of the circle defined by the equation x2 plus y2-6 plus 8y plus 210?
Without an equality sign it can't be considered to be an equation but in general the equation of a circle whose centre is at (a, b) and radius is r is:- (x-a)^2+(y-b)^2 = r^2
What is the equation of a circle whose centre is at 3 -5 and meets the point of 6 -7 on the Cartesian plane?
Centre of circle: (3, -5) Distance from (3, -5) to (6, -7) is the square root of 13 which is the radius Equation of the circle: (x-3)^2 + (y+5)^2 = 13
What is the radius for a circle whose equation is x2 plus y2 36?
If that means = 36 then then the radius of the circle is 6 units
What is the equation of a circle whose center is at the origin and whose radius is 4?
x2 + y2 = 2
What is the equation of a circle whose center is at the origin and whose radius is 10?
The equation of circle is (x−h)^2+(y−k)^2 = r^2, where h,k is the center of circle and r is the radius of circle. so, according to question center is origin and radius is 10, therefore, equation of circle is x^2 + y^2 = 100
What is the equation of a circle whose center is at the origin and radius is 2?
It is x2 + y2 = 4
What is equation of a circle whose center is at the origin?
x2 + y2 = r2, where r is the radius.
What is the equation of a circle whose center is at the origin and whose radius is 16?
(x-0)² + (y-0)² = r²
What is the radius for a circle whose equation is x2 y2 16?
I think you have missed out an equals sign. If you mean x2 + y2 = 16, then the radius is 4.
