anonymous
  • anonymous
r^2+81=r^2=60r+900
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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amistre64
  • amistre64
r^2: r^2 -60r -900 =0
amistre64
  • amistre64
doesnt make sense really
amistre64
  • amistre64
we can try lol

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More answers

amistre64
  • amistre64
(r-30)^2 = 900+900 r = 30 +- sqrt(1800)
amistre64
  • amistre64
sqrt(1800) = 30sqrt(2) right? r = 30(1 +- sqrt(2)) maybe
anonymous
  • anonymous
amistre64, he has posted the same question earlier and I got a different answer: http://openstudy.com/groups/mathematics#/groups/mathematics/updates/4de40fa04c0e8b0b62caacd8
amistre64
  • amistre64
different is good, cause i dont think mine is right .... i got doubts lol
amistre64
  • amistre64
r^2 +81 = r^2 +60r +900 0 = 60r +900-81 r = (900-81)/60
anonymous
  • anonymous
(13.65 * 13.65) + 81 = (13.65 * 13.65) + 60(13.65) +900 It does not satisfy the equation
amistre64
  • amistre64
forgot a - sign lol
amistre64
  • amistre64
267.3225 = 267.3225
amistre64
  • amistre64
r = -13.65
anonymous
  • anonymous
would 12 be the answer ?
amistre64
  • amistre64
no 12 would not be the answer
myininaya
  • myininaya
you have too many equal signs can you rewrite the problem please
amistre64
  • amistre64
-13.65 is what i get
myininaya
  • myininaya
i get there is no solution
amistre64
  • amistre64
r^2 means r squared ...

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