pgalens
pgalens pgalens
  • 11-10-2020
  • Mathematics
contestada

please help with this question

please help with this question class=

Respuesta :

shinchan69
shinchan69 shinchan69
  • 11-10-2020

Answer:

(1/3)x+ x-20+ x-10+40= 360

Step-by-step explanation:

(1/3)x+ x-20+ x-10+40= 360

x+3x-60+3x-30+120=360*3

7x+30= 1080

7x= 1050

x= 150

Answer Link
musiclover10045
musiclover10045 musiclover10045
  • 11-10-2020

The sum of the angles = 360.

Add the 4 angles together so they equal 360:

1/3x + x-20 + x-10 + 40 = 360

Combine like terms:

2 1/3x - 30 + 40 = 360

Continue combining like terms:

2 1/3x +10 = 360

Subtract 10 from both sides:

2 1/3x = 350

Divide both sides by 2 1/3:

x = 150

Answer Link

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