hollybear0125 hollybear0125
  • 03-01-2021
  • Mathematics
contestada

PLEASE HELP!!
Find the value of x
10 and 11!

PLEASE HELP Find the value of x 10 and 11 class=

Respuesta :

Karangamer
Karangamer Karangamer
  • 03-01-2021

Answer:

10)

11x-1+20x-3=151 (the exterior angle of an triangle is equal to the sum of two opposite interior angles)

31x-4=151

31x=151+4

31x=155

x=155/31

x=5°

11)

14x-13=4x+13+6x+2

14x-4x-6x=13+13+2

4x=28

x=28÷4

x=7°

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