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Mathematics 8 Online
OpenStudy (anonymous):

point Q lies in the interior of RST if m

OpenStudy (campbell_st):

well does the diagram look like

OpenStudy (anonymous):

sorry my OS crashed

OpenStudy (campbell_st):

ok... so the 2 angles RSQ and QST add to RST so you have 4x - 7 + 11x + 12 = 125 or 15x + 5 = 125 just solve for x

OpenStudy (anonymous):

15x=120 /15 /15 x=8

OpenStudy (campbell_st):

that makes sense... well done

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