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Mathematics 21 Online
OpenStudy (anonymous):

Point E is located at (–2, 2) and point F is located at (4, –6). What is the distance between points E and F? Options are 10, square root 20, square root 52, and square root 28

OpenStudy (anonymous):

No these are practice questions in the back of my book.

OpenStudy (anonymous):

\[D = \sqrt{(x _{1}-x _{2})^{2} + (y _{1}-y _{2})^{2}}\]

OpenStudy (anonymous):

Your points E and F are of the form \[(x _{1}, y _{1}) and (x _{2}, y _{2}) \] so just substitute. The squares and square root will be easy numbers to work with.

OpenStudy (anonymous):

|dw:1350575108177:dw|

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