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19-05-2021
Mathematics

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Find the distance between the pair of points.
(-7,4) and (2,-5)

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19-05-2021

Answer:

[tex]length = \sqrt{ {(x _{2} - x _{1} ) {}^{2} + (y _{2} - y _{1} )}^{2} } \\ = \sqrt{ {(2 - ( - 7))}^{2} + {( - 5 - 4)}^{2} } \\ = \sqrt{ {9}^{2} + {( - 9)}^{2} } \\ = \sqrt{81 + 81} \\ \sqrt{162} \\ = 12.7 \: units[/tex]

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