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pychu [463]
3 years ago
12

PLZ HELP!!! 20 POINTS!!!

Mathematics
1 answer:
dangina [55]3 years ago
4 0

Answer: \\ Since \:  \widehat{SRT} = \widehat{STR} \:  \\and \:  \widehat{RTU} = \widehat{STR} + \widehat{STU} = 180^{\circ}  \\ \Rightarrow  \widehat{SRT} + \widehat{STU} = 180^{\circ} \\ \Leftrightarrow 4x - 20 + 6x = 180 \\ \Leftrightarrow10x = 200 \\ \Leftrightarrow x = 20 \\ \widehat{SRT} = 4 \times 20 - 20 = 60^{\circ}

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