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Mathematics 21 Online
OpenStudy (anonymous):

Alex leaves home, travels 5 miles east, and arrives at the library. He leaves the library and travels 3 miles north to a friend's house. This trip can be plotted on the coordinate plane, where home is the point (0,0). Alex wants to find out how far his house is from his friend's house and uses the distance formula. Which other formula can he use?

OpenStudy (anonymous):

|dw:1357499786033:dw| do you know the distance formula?

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