Respuesta :

  • We know, sum of all angles of a triangle is 180°.
  • Therefore, by the problem

72 + 64 + (4x+20) = 180

or, 156 + 4x = 180

or, 4x = 180 - 156

or, 4x = 24

or, x = 24 ÷ 4 = 6

Your answer is 6.

Hi1315

Answer:

[tex]x = 24[/tex]

Step-by-step explanation:

Sum of the interior angles in the triangle is 180 degrees

So,

[tex]72 + 64 + 4x +20 = 180\\[/tex]

Now solve for x

[tex]72 + 64 + 4x +20 = 180\\\\156 + x=180\\x=180-156\\x=24[/tex]

hope this helps you

please let me know if you have any other questions :-)

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