anonymous
  • anonymous
Find the foci of the ellipse 25x^(2)+16y^(2)-50x-96y-231=0 a) (1,7) and (1,-1) b) (1,6) and (1,0) c) (3,3) and (-1,3) d) (-2,3) and (4,3)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
(0.3) and (0,-3)
anonymous
  • anonymous
thats not an answer
anonymous
  • anonymous
c)

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anonymous
  • anonymous
b
anonymous
  • anonymous
why c and why b?
anonymous
  • anonymous
its a vertical ellipse so x-coordinate of focii will be same
anonymous
  • anonymous
so its b)
anonymous
  • anonymous
why not a? both x-intercepts are 1
anonymous
  • anonymous
ya for that you have to do the math
anonymous
  • anonymous
my bad, saubhik is right.
anonymous
  • anonymous
factorize, to (x-1)^2/16 +(y-3)^2/25 =1
anonymous
  • anonymous
and then you know how to find focus with transformation of coordinates

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