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tia_tia [17]
3 years ago
6

Help find x. I believe it’s 13

Mathematics
1 answer:
aksik [14]3 years ago
4 0

Answer:

m∠RST = 155°

m∠RSU = 102°

Step-by-step explanation:

m∠RST  = m∠RSU + m∠UST

12x - 1    = 9x - 15 + 53

12x - 9x = 1- 15 + 53

      3x   = 39

        x   = 39/3

         x = 13°

m∠RST  = (12x -1)° = (12 * 13 - 1)° =   (156 - 1 )° = 155°

m∠RSU = (9x -15)° = (9 * 13 - 15)° = ( 117 - 15)° = 102°

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