Find the Foci and directrices

  1. The equation4x^2 +9y^2 -36 = 0 represents an ellipse in standard position. Find the coordinates of the foci and the equations of
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    2. s17 asked by s17
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  2. Find the foci and directrices of the following parabola:(a) y^2=8x (b) y^2=24x (c) x^2=12y (d) x^2=5y
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    2. Ande asked by Ande
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  3. Find the Foci and directrices of the following parabola of the pattern:y^2=8x at (2,4) y^2=24x at (5/2, 6) x^2=12y at (6, 3)
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    2. Ande asked by Ande
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  4. Find the foci of the ellipse with the equation (16x^2) + (49y^2) = 784 algebraically. Do not round. Find the correct ordered
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    2. 31 asked by 31
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  5. how to find the equation of a parabola given foci(-7,-17), (-7,17),the absolute value of the difference of the distances of any
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    2. Moana asked by Moana
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  6. Find the foci of the ellipse with the equation (16x^2) + (49y^2) = 784 algebraically. Do not round. Find the correct ordered
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    2. 31 asked by 31
    3. views icon 146 views
  7. Convert into standard form. Find any centres, vertices, foci, asymptotes, directices and axes of symmetry.64x^2-36y^2-512x-216y=
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    2. Jen asked by Jen
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  8. Given that the ellipse x^2/a^2 + y^2/b^2 =1 has foci at(+/-ae,0)where e is the eccentricity and b^2=a^2(1-e^2),find the
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    2. muzungu asked by muzungu
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  9. Choose the equation that best represents an ellipse for the given foci and co-vertices.1. foci (+-2, 0) co-vertices (0, +-4) 2.
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    2. Karen asked by Karen
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  10. For the ellipse with equation 5x^2+64y^2+30x+128y-211=0, find the cooridinates of the center, foci, and vertices. Then, graph
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    2. Mary asked by Mary
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