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OpenStudy (anonymous):
Find the distance between the points (2, 8) and (-1, 9)
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OpenStudy (anonymous):
Using the distance formula we get:\[d=\sqrt(x_{1}-x_{2})^{2} + (y_{1}-y_{2})^{2} = \sqrt(2+1)^{2}+(8-9)^{2}=\sqrt(10) \]
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