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OpenStudy (anonymous):
What is the perimeter of pqr with vertices P(-2 ,9) , Q(7,-3) , and R(-2,-3) in the coordinate plane ?
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OpenStudy (anonymous):
find pq,qr,pr by distance formula \[d=\sqrt{\left( x _{2} -x _{1}\right)^2+\left( y _{2} -y _{1}\right)^2}\] and then perimeter=pq+qr+pr
OpenStudy (anonymous):
correction write PQ,QR,PR in place of pq,qr,pr
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