mathisfun13
  • mathisfun13
Find the distance from point A (3,-7) to point B (8,-1)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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terenzreignz
  • terenzreignz
distance formula goes (for two points \((x_1 \ , \ y_1)\) and \((x_2 \ , \ y_2)\) goes... \[\huge \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\]
terenzreignz
  • terenzreignz
It is your discretion which of those two points you pick for x1, y1 etc...
mathisfun13
  • mathisfun13
okay so do I add them after i get the points

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terenzreignz
  • terenzreignz
first, what are your values for x1, x2, y1, and y2?
mathisfun13
  • mathisfun13
i got 5 and -6
mathisfun13
  • mathisfun13
i did 8-3 and 1-7
terenzreignz
  • terenzreignz
ahh, good :) Those are the differences :) So square 5 and square -6, and add the squares.
mathisfun13
  • mathisfun13
so -1?
terenzreignz
  • terenzreignz
Square 5 and square -6 ?
mathisfun13
  • mathisfun13
it says have to put my final answer in decimal form than round to the nearest hundredth
mathisfun13
  • mathisfun13
ohhhh
mathisfun13
  • mathisfun13
25 and 6 so than 31?
terenzreignz
  • terenzreignz
Why did you not square the 6?
anonymous
  • anonymous
|dw:1371445335250:dw|
mathisfun13
  • mathisfun13
ii meant 36
mathisfun13
  • mathisfun13
idk it said the answer was incorrect still
johnweldon1993
  • johnweldon1993
\[d = \sqrt{(y_2 - y_1)^2 + (x_2 - x_1)^2}\] Your points are (3,-7) (8,-1) (x1,y1)(x2,y2) so \[d = \sqrt{(-1 + 7)^2 + (8 - 3)^2}\] \[d = \sqrt{(6)^2 + (5)^2}\] \[d = \sqrt{36 + 25}\] \[d = \sqrt{36 + 25}\] \[d = \sqrt{61}\] \[d = ?\]

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