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  • 31-01-2018
  • Mathematics
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altavistard
altavistard altavistard
  • 31-01-2018
Problem 9:

Use the distance formula:

d = sqrt (  [x2-x1]^2 + [y2-y1]^2 )

Here, d = sqrt ( [9-4)^2 + [-1-7]^2 )  = sqrt (25+64) = sqrt(89) (answer)

Do exactly the same thing for #10 and #11.

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