document.write( "Question 458448: What is the center and radius of the circle: 4x^2+4y^2+48=640\r
\n" ); document.write( "\n" ); document.write( "for this equation, i divided all terms by 4. Therefore, leaving the equation with: x^2+y^2+12=160\r
\n" ); document.write( "\n" ); document.write( "Next, i brought the 12 to the other side of the = sign; thus, making the equation: x^2+y^2= 148\r
\n" ); document.write( "\n" ); document.write( "Now, we know that the equation of the circle is: (x+h)^2+(y+k)^2= r^2\r
\n" ); document.write( "\n" ); document.write( "since we can see from the equation: x^2+y^2=148
\n" ); document.write( "there is no h or k and therefore, the center of the circle is (0,0)\r
\n" ); document.write( "\n" ); document.write( "we know that the radius squared is 148 so in order to get the radius you need to square root the 148. therefore, the square root of 148 is 12.16552506\r
\n" ); document.write( "\n" ); document.write( "is there a mistake that i made with this equation? please let me know!
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Algebra.Com's Answer #314520 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
Looks good to me.
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