anonymous
  • anonymous
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
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
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 \(\large c^2 =b^2-a^2\)
anonymous
  • anonymous
let's find (h,k) first... h= k= ??
anonymous
  • anonymous
look at your equation and match it up with the one i wrote... what matches with h and k?

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anonymous
  • anonymous
please hurry i have to have this done in 5 minutes or i fail1!
anonymous
  • anonymous
and thank you! :D
anonymous
  • anonymous
idk what?
anonymous
  • anonymous
\(\large \frac {(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}=1\) \(\large \frac {(x+5)^2}{5^2}+\frac{(y-7)^2}{12^2}=1\)
anonymous
  • anonymous
oh ok
anonymous
  • anonymous
so what are the lengths without vvariables? o.O
anonymous
  • anonymous
for the minor axis, its 2a for the major axis, its 2b you need to tell me what a and b are....
anonymous
  • anonymous
3 minutes!!!!!
anonymous
  • anonymous
but what about the ellipse that is nothing but variables?
anonymous
  • anonymous
a is 5 b is 12
anonymous
  • anonymous
and am i allowed to have variable in the legths?
anonymous
  • anonymous
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...
anonymous
  • anonymous
i already gave you a and b...
anonymous
  • anonymous
so 2a is 10?
anonymous
  • anonymous
yes.
anonymous
  • anonymous
and 2b is 24?>
anonymous
  • anonymous
yes
anonymous
  • anonymous
and the foci and eellipse?
anonymous
  • anonymous
what is c?
anonymous
  • anonymous
use the relation i showed u.... in the first post...
anonymous
  • anonymous
you already know what a and b are.. you can find c...
anonymous
  • anonymous
hmmm i really do not know this plus i am slightly brain dead btw r u a guy or girl
anonymous
  • anonymous
dont i just have get the square roote of c^2 and since c^2=119 than the answer would be 10.9? right?
anonymous
  • anonymous
cookies....why does it matter?
anonymous
  • anonymous
just wanna know
anonymous
  • anonymous
why?
anonymous
  • anonymous
dpanlc?
anonymous
  • anonymous
u there?
anonymous
  • anonymous
idk so i dnt get it wrong
anonymous
  • anonymous
reaally/?
anonymous
  • anonymous
well i'm a girl....soooooooo
anonymous
  • anonymous
yess i dnt wanna be rude kewl glad to have a gal pal

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