If m RST = (12x - 1) , m RSU = (9x - 15) , and m UST = 53 , what is m RST

Zec asked Jun 4, 2023

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Zec asked Jun 4, 2023

by Zec

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14 votes

We have the following:

$\begin{gathered} 12x-1-53=9x-15 \\ 12x-9x=1+53-15 \\ 3x=39 \\ x=(39)/(3)=13 \end{gathered}$

therefore:

RST:

$12\cdot13-1=155$

therefore RST is 155°

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