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  • 04-05-2021
  • Mathematics
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PLEASE HELP me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

PLEASE HELP me class=

Respuesta :

janmilczek
janmilczek janmilczek
  • 04-05-2021

Answer:

43°

Step-by-step explanation:

AD = (7x + 1)°

DC = 90° (right angle)

CB = (9x - 7)°

AD + DC = CB = AB

(7x + 1)° + 90° + (9x - 7)° = 180°

7x + 1 + 9x - 7 = 90

16x - 6 = 90

16x = 96

x = 96/16 = 6

AD = (7x + 1)° = (7*6 + 1)° = 43°

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