Annalisef2007 Annalisef2007

02-03-2021
Mathematics

contestada

please help this is the last question and i don’t understand

please help this is the last question and i dont understand class=

Respuesta :

Podetola Podetola

02-03-2021

Answer: 30

Step-by-step explanation:

The angles of triangles have to add up to 180°

So:

x + x + 70 + x + 20 = 180

Bring like terms together

x + x + x + 70 + 20 = 180

3x + 90 = 180

Subtract 90 from both sides

3x = 90

Divide both sides by 3

x = 30

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