document.write( "Question 206837: Could someone tell me if this is right?
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document.write( "Problem; What is the equation of the ellipse with foci at (0,-4) and (0,4) and the sum of its focal radii being 10?
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document.write( "My answer; 2a=10 a=5 (sum of focal radii)
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document.write( "(0+0/2, (4+4/2)= (0,4)
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document.write( "c=4 b^2=a^2-c^2=25-16=9
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document.write( "equation of the ellipse is;
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document.write( "(x-0)^2/25+(y-4)^2/9=1 \n" );
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Algebra.Com's Answer #162728 by zakiyahjones24(1)![]() ![]() ![]() You can put this solution on YOUR website! yes it is right \n" ); document.write( " |