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Mathematics 81 Online
OpenStudy (anonymous):

Find the area of triangle PQR if P is (3,18),Q(-5,7) and R is (13,1). Please Explain how you got the answer

OpenStudy (mathteacher1729):

Are you allowed to use determinants?

OpenStudy (anonymous):

idk, we're doing anlytic geometry

OpenStudy (anonymous):

so most of this we've graphed but feel free to use any way as long as it solves it

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