anonymous
  • anonymous
Solve by taking square roots -8+36r^2=1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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thomaster
  • thomaster
first you'd have to get -8 to the right
anonymous
  • anonymous
so add 8 to both sides.. i got 36r^2=9
thomaster
  • thomaster
Yes, any idea what to do next?

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anonymous
  • anonymous
divide 36
thomaster
  • thomaster
yea divide 9 by 36
anonymous
  • anonymous
.25?
thomaster
  • thomaster
Yep. So now we have \(\Large r^2=\frac{1}4\)
thomaster
  • thomaster
The last step would be take the square root of both sides to solve for r
anonymous
  • anonymous
and how would i get an answer to that?
thomaster
  • thomaster
\(\Large\sqrt{0.25}\) Use a calculator
anonymous
  • anonymous
.5
thomaster
  • thomaster
yep :) So \(\Large r=\frac{1}2\) (or 0.5)
anonymous
  • anonymous
Goodness, thank you so much! :D
thomaster
  • thomaster
haha no problemo ◠◡◠

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