joelpimentel
joelpimentel joelpimentel
  • 14-05-2018
  • Mathematics
contestada

The value of x is _____

The value of x is class=

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altavistard
altavistard altavistard
  • 15-05-2018
Angle TRS is equal to 180 - 9x (straight angles).  

The sum of all the interior angles of a triangle is 180.  Thus,

180 - 9x + 5x + 9 + x = 180, resulting in -9x + 5x + 9 + x = 0. 
Then -4x + x = -9, or -3x = -9, or x = 3 (answer)
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