XxKitKatxX
XxKitKatxX XxKitKatxX
  • 13-06-2017
  • Mathematics
contestada

Find the exact distance between the points (7,8) and (1,-17)

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apologiabiology
apologiabiology apologiabiology
  • 13-06-2017
distance between (x1,y1) and (x2,y2) is
[tex]D= \sqrt{(x_2-x_1)^2+(y_2-y_1)^2} [/tex]
so the distance between (7,8) and (1,-17) is

[tex]D= \sqrt{(1-7)^2+(-17-8)^2} [/tex]
[tex]D= \sqrt{(-6)^2+(-25)^2} [/tex]
[tex]D= \sqrt{36+225} [/tex]
D=√261
D=3√29
the exact distance is 3√29 units
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