Respuesta :

Answer:

x = 40º

Step-by-step explanation:

The unmarked angle in the triangle is supplementary  to 130

180  - 130 = 50º

The angle in a triangle total 180

x + 90 + 50 = 180

x + 140 = 180

Subtract 140 from oth sides

x = 40º
The answer is x=40 degrees

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