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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

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

let's find (h,k) first... h= k= ??

3. dpaInc

look at your equation and match it up with the one i wrote... what matches with h and k?

4. mj.jones90

please hurry i have to have this done in 5 minutes or i fail1!

5. mj.jones90

and thank you! :D

6. mj.jones90

idk what?

7. dpaInc

$$\large \frac {(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}=1$$ $$\large \frac {(x+5)^2}{5^2}+\frac{(y-7)^2}{12^2}=1$$

8. mj.jones90

oh ok

9. mj.jones90

so what are the lengths without vvariables? o.O

10. dpaInc

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 minutes!!!!!

12. mj.jones90

but what about the ellipse that is nothing but variables?

13. dpaInc

a is 5 b is 12

14. mj.jones90

and am i allowed to have variable in the legths?

15. dpaInc

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

i already gave you a and b...

17. mj.jones90

so 2a is 10?

18. dpaInc

yes.

19. mj.jones90

and 2b is 24?>

20. dpaInc

yes

21. mj.jones90

and the foci and eellipse?

22. mj.jones90

what is c?

23. dpaInc

use the relation i showed u.... in the first post...

24. dpaInc

you already know what a and b are.. you can find c...

25. cookies

hmmm i really do not know this plus i am slightly brain dead btw r u a guy or girl

26. mj.jones90

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

cookies....why does it matter?

28. cookies

just wanna know

29. mj.jones90

why?

30. mj.jones90

dpanlc?

31. mj.jones90

u there?

32. cookies

idk so i dnt get it wrong

33. mj.jones90

reaally/?

34. mj.jones90

well i'm a girl....soooooooo

35. cookies

yess i dnt wanna be rude kewl glad to have a gal pal

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