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Mathematics 21 Online
OpenStudy (anonymous):

given points A (-5,8) and B (3,4) find the magnitude of the vector, leaving the answer in simplest form

OpenStudy (anonymous):

the vector AB would be <8,-4> the magnitude would be Sqrt ( 8^2 + (-4)^2) so Sqrt ( 64+16) = Sqrt (80) = 4 Sqrt (5)

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