document.write( "Question 404679: write the equation in standard form. name the center, the length of the minor and major axis, and direction.
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document.write( "5x^2+9y^2=720\r
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document.write( "x^2+9y^2-4x+54y+49=0 \n" );
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Algebra.Com's Answer #285981 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! write the equation in standard form. name the center, the length of the minor and major axis, and direction. \n" ); document.write( " 5x^2+9y^2=720 \n" ); document.write( " x^2+9y^2-4x+54y+49=0\r \n" ); document.write( "\n" ); document.write( "..\r \n" ); document.write( "\n" ); document.write( "5x^2+9y^2=720 \n" ); document.write( "divide by 720 \n" ); document.write( "x^2/144+y^2/80=1(standard form) \n" ); document.write( "This is an ellipse with: \n" ); document.write( "center (0,0),major axis horizontal because a>b \n" ); document.write( "a^2=144 \n" ); document.write( "a=12 \n" ); document.write( "b^2=80 \n" ); document.write( "b=sqrt(80) \n" ); document.write( "length of major axis,=2a=24 \n" ); document.write( "length of minor axis, 2b =2Sqrt(80) \n" ); document.write( ".. \n" ); document.write( "x^2+9y^2-4x+54y+49=0 \n" ); document.write( "complete the squares \n" ); document.write( "(x^2-4x+4)+9(y^2+6y+9)=-49+4+81 \n" ); document.write( "(x-2)^2+9(y+3)^2=36 \n" ); document.write( "(x-2)^2/36+(y+3)^2/4=1 (standard form) \n" ); document.write( "This is an ellipse with: \n" ); document.write( "center (2,-3), major axis horizontal \n" ); document.write( "a^2=36 \n" ); document.write( "a=6 \n" ); document.write( "b^2=4 \n" ); document.write( "b=2 \n" ); document.write( "length of major axis,=2a=12 \n" ); document.write( "length of minor axis, 2b =4 \n" ); document.write( " \n" ); document.write( " |