Friday

November 28, 2014

November 28, 2014

Posted by **Lance** on Monday, January 7, 2013 at 2:26pm.

Please I really need your help. I do not know how to do this problem.

- Math,Geometry -
**Anonymous**, Monday, January 7, 2013 at 7:08pmyou are looking for two of the radii of the circle (x+5)^2 + (y+3)^2 = r^2

r^2 equals the square of the distance from (-5,-3) to (5,7), minus (2√5)^2

the radii are tangent to

(x-5)^2 + (y-7)^2 = 20

the points of tangency (intersections of the two circles) will give the points needed (along with (-5,-3))to write the equations of the lines

**Answer this Question**

**Related Questions**

Math,Geometry - What are the equations of the lines through (-5,-3) and passing ...

geometry - What are the equations of the lines through (-5, -3) and passing at ...

Analytic Geometry - Find the equation of a circle passing through (-1,6) and ...

Analytic Geometry - Find the equation of a circle passing through (3,7) and ...

Calculus - Determine the equations of the following lines: (a) having slope ¡1 ...

Precalculus check answers help! - 16. Find the distance between P (–2, 5) and ...

Precalculus check answers help! - 16. Find the distance between P (–2, 5) and ...

Analytic Geometry - Find the equation of a circle passing through (3,7) and ...

math - Find the slope of the lines that are (a) parallel lines (b) perpendicular...

math - Find the slope of the lines that are (a) parallel lines (b) perpendicular...