lifewitharyy41 lifewitharyy41
  • 14-01-2021
  • Mathematics
contestada

I need help with this problemmm, someone help mee!!.

I need help with this problemmm someone help mee class=

Respuesta :

Аноним Аноним
  • 14-01-2021

Answer:

∠A=30°

Step-by-step explanation:

let's call the angle at the bottom B and the one next to the 130 C

∠A=3x-6

∠C=180-130= 50°

vertical angles are equal∠B =8x+4

∠A+∠C+∠B=180°

find x:

3x-6+50+8x+4= 180°

11x+48=180°

11x= 132

x=12

find ∠A

∠A=3x-6= 3(12)-6 =30°

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