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Mathematics 25 Online
OpenStudy (anonymous):

Find the area of the parallelogram with vertices (3,3), (4, 8), (9, 11), and (10, 16)

OpenStudy (anonymous):

|DC|=(9-10)i+(11-16)j=a=-1i-5j |AD|=(10-3)i+(16-3)j=b=7i+13j |axb|=i j k -1 -5 0 7 13 0 i(0)+(o)j+(-13+35)k=22k Area=|22k|=22

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