anonymous
  • anonymous
find the length of the segment from (-3,2) to (5,-1)
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
the answer is \[\sqrt{73}\], i just have no idea on how to get there
anonymous
  • anonymous
The length L is given by: \[L=\sqrt{(5-(-3))^2+(-1-2)^2}=\sqrt{8^2+(-3)^2}=\sqrt{64+9}=\sqrt{73}\]
anonymous
  • anonymous
So, you take the square of the difference of the x's coordinates , add it to the square of the difference of the y's coordinates. And then, square the whole number. You have to be careful with signs. Does that make sense?

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anonymous
  • anonymous
it does, thank you. is that a specific formula that you're using though?
anonymous
  • anonymous
nevermind I found it, thanks!
anonymous
  • anonymous
Yeah. You're welcome, and thanks for the medal.

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