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mj.jones90

  • 3 years ago

Find the following values to the equation of the ellipse (x+5)^2/25 +(y-7)^2/144 = 1. a. Center b. Vertices c. Length of minor axis d. Length of the major axis e. Foci

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  1. dpaInc
    • 3 years ago
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    here is all you need to answer this question: \[\large \frac {(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}=1 \] where (h,k) is the center vertices for this ellipse: (h,k\(\pm \)b) length of the minor axis: 2a length of major axis: 2b foci: (h,k\(\pm \)c where \(\large c^2 =b^2-a^2\)

  2. dpaInc
    • 3 years ago
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    let's find (h,k) first... h= k= ??

  3. dpaInc
    • 3 years ago
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    look at your equation and match it up with the one i wrote... what matches with h and k?

  4. mj.jones90
    • 3 years ago
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    please hurry i have to have this done in 5 minutes or i fail1!

  5. mj.jones90
    • 3 years ago
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    and thank you! :D

  6. mj.jones90
    • 3 years ago
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    idk what?

  7. dpaInc
    • 3 years ago
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    \(\large \frac {(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}=1\) \(\large \frac {(x+5)^2}{5^2}+\frac{(y-7)^2}{12^2}=1\)

  8. mj.jones90
    • 3 years ago
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    oh ok

  9. mj.jones90
    • 3 years ago
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    so what are the lengths without vvariables? o.O

  10. dpaInc
    • 3 years ago
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    for the minor axis, its 2a for the major axis, its 2b you need to tell me what a and b are....

  11. mj.jones90
    • 3 years ago
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    3 minutes!!!!!

  12. mj.jones90
    • 3 years ago
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    but what about the ellipse that is nothing but variables?

  13. dpaInc
    • 3 years ago
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    a is 5 b is 12

  14. mj.jones90
    • 3 years ago
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    and am i allowed to have variable in the legths?

  15. dpaInc
    • 3 years ago
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    the equation tells you everything you need to know..... you can identify all these quantities i'm asking for just by looking at your equation...

  16. dpaInc
    • 3 years ago
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    i already gave you a and b...

  17. mj.jones90
    • 3 years ago
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    so 2a is 10?

  18. dpaInc
    • 3 years ago
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    yes.

  19. mj.jones90
    • 3 years ago
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    and 2b is 24?>

  20. dpaInc
    • 3 years ago
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    yes

  21. mj.jones90
    • 3 years ago
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    and the foci and eellipse?

  22. mj.jones90
    • 3 years ago
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    what is c?

  23. dpaInc
    • 3 years ago
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    use the relation i showed u.... in the first post...

  24. dpaInc
    • 3 years ago
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    you already know what a and b are.. you can find c...

  25. cookies
    • 3 years ago
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    hmmm i really do not know this plus i am slightly brain dead btw r u a guy or girl

  26. mj.jones90
    • 3 years ago
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    dont i just have get the square roote of c^2 and since c^2=119 than the answer would be 10.9? right?

  27. mj.jones90
    • 3 years ago
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    cookies....why does it matter?

  28. cookies
    • 3 years ago
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    just wanna know

  29. mj.jones90
    • 3 years ago
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    why?

  30. mj.jones90
    • 3 years ago
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    dpanlc?

  31. mj.jones90
    • 3 years ago
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    u there?

  32. cookies
    • 3 years ago
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    idk so i dnt get it wrong

  33. mj.jones90
    • 3 years ago
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    reaally/?

  34. mj.jones90
    • 3 years ago
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    well i'm a girl....soooooooo

  35. cookies
    • 3 years ago
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    yess i dnt wanna be rude kewl glad to have a gal pal

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