anonymous
  • anonymous
Use the distance formmula to find the distance between point B (-3,-8) and point C (2,4).
Mathematics
  • Stacey Warren - Expert brainly.com
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chestercat
  • chestercat
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PhoenixFire
  • PhoenixFire
Do you know what the distance formula is?
anonymous
  • anonymous
yes but I'm confused as to where to put the numbers in.
PhoenixFire
  • PhoenixFire
\[d=\sqrt{x^2+y^2}=\sqrt{(x_1-x)^2+(y_1-y)^2}\] You have two points, find the change in x and change in y, and put into the formula.

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anonymous
  • anonymous
is -3 -8 x1 and y1
PhoenixFire
  • PhoenixFire
it shouldn't make a difference since it's squared. But usually if you want to find the distance from B to C, your x1y1=C and xy=B
anonymous
  • anonymous
Is the answer 17
PhoenixFire
  • PhoenixFire
\[dist=\sqrt{(2+3)^2+(4+8)^2}=\sqrt{25+144}=\sqrt{169}=13\]
anonymous
  • anonymous
My distance formula says you subtract x 2 and x 1
PhoenixFire
  • PhoenixFire
yup. \[2-(-3)=2+3=5\]
PhoenixFire
  • PhoenixFire
\[4-(-8)=4+8=12\] Double negative becomes a positive.
anonymous
  • anonymous
Ok. Thanks for youre help.

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