anonymous
  • anonymous
match the parabolas with their focuses Focuses: (-2.75,-10), (2,11.75), (-4, -13.875), (1.25,17)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
not all of these will be used y=-x^2+4x+8 y=2x^2+16x+18 y=-2x^2+5x+14 y=-x^2+17x+7 y=2x^2+11x+5 y=-2x^2+6x+5
Mehek14
  • Mehek14
what did you get so far?
anonymous
  • anonymous
nothing, I don't even know how to begin

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Mehek14
  • Mehek14
use \(\dfrac{-b}{2a}\)
Mehek14
  • Mehek14
\(ax^2+bx+c\)
Mehek14
  • Mehek14
in the first equation, a = -1, b = 4
Mehek14
  • Mehek14
plug that into the formula to get the x coordinate of the focus, then plug the value of x into the equation to find y
Mehek14
  • Mehek14
what do you get for the first one?
LynFran
  • LynFran
yea here an example for the 1st one |dw:1439146843038:dw|the rest shd be done the same...

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