rose0753 rose0753
  • 25-11-2020
  • Mathematics
contestada

What is the value of a?

What is the value of a class=

Respuesta :

jimrgrant1 jimrgrant1
  • 25-11-2020

Answer:

a = 43°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 angles and equate to 180, that is

a + 8 + 2a + 43 = 180

3a + 51 = 180 ( subtract 51 from both sides )

3a = 129 ( divide both sides by 3 )

a = 43

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