document.write( "Question 364719: The ellipse graphed has its center at (-15, -10), its horizontal axis is of length 20, and its vertical axis is of length 10. What is its equation?\r
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Algebra.Com's Answer #260056 by Edwin McCravy(20060)\"\" \"About 
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The ellipse graphed has its center at (-15, -10), its horizontal axis is of length 20, and its vertical axis is of length 10. What is its equation?\r
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document.write( "An ellipse which has its horizontal axis longer than its vertical axis\r\n" );
document.write( "has equation:\r\n" );
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document.write( "\"%28x-h%29%5E2%2Fa%5E2%2B%28y-k%29%5E2%2Fb%5E2=1\"\r\n" );
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document.write( "where \r\n" );
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document.write( "(h,k) = the center = (-15,-10)\r\n" );
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document.write( "a = \"1%2F2\" the horizontal axis = \"1%2F2\"(20) = 10\r\n" );
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document.write( "b = \"1%2F2\" the vertical axis = \"1%2F2\"(10) = 5\r\n" );
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document.write( "\"%28x-%28-15%29%29%5E2%2F%2810%29%5E2%2B%28y-%28-10%29%29%5E2%2F%285%29%5E2=1\"\r\n" );
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document.write( "\"%28x%2B15%29%5E2%2F100%2B%28y%2B10%29%5E2%2F25=1\"\r\n" );
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document.write( "Edwin
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