hifriends1234 hifriends1234
  • 07-12-2017
  • Mathematics
contestada

Plz show me how you got the answer thanks

Plz show me how you got the answer thanks class=

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Аноним Аноним
  • 07-12-2017
If the total value of the angle is 90 degrees, half of that is 45, so 3x - 9 = 45
3x = 54 
x = 18

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