zack306 zack306

15-04-2021
Mathematics

contestada

Some one help me solve for x

Some one help me solve for x class=

Respuesta :

jimrgrant1 jimrgrant1

15-04-2021

Answer:

x = 10

Step-by-step explanation:

The sum of the interior angles of a quadrilateral = 360°

Sum the angles and equate to 360

9x + 15 + 85 + 90 + 80 = 360, that is

9x + 270 = 360 ( subtract 270 from both sides )

9x = 90 ( divide both sides by 9 )

x = 10

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