anonymous
  • anonymous
If y=2x^2-4x-5 what is the value of y when x=-3?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Izzy18970
  • Izzy18970
go to http://www.enotes.com/homework-help/how-do-find-any-x-y-intercepts-f-x-2x-2-4x-5-98403
Izzy18970
  • Izzy18970
i hope this helps
anonymous
  • anonymous
you just replace the x in the given y :) like this y= 2 times ( -3)^2 -4 times (-3) -5 y = 2 times 9 +12 -5 y= 18+12-5 y= 25 And there you go, that basically all you need to do. hope this help

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anonymous
  • anonymous
Thank you. I also am stuck on this: Equivalent. 5r-3>2r+6? r>1/3. r>3 r>1. r>6
anonymous
  • anonymous
Leong?
anonymous
  • anonymous
yes
anonymous
  • anonymous
so it just like this: 5r-3>2r+6? 5r-2r-3>2r-2r+6 3r-3>6 3r-3+3>6+3 3r>9 ( divide 3 for each side) r>3 So your answers should be r>3 :)

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