Respuesta :

Answer:

x=145

Step-by-step explanation:

A circle have at max 360 degrees.

[tex]40 + 85 + 90 + x = 360[/tex]

[tex]125 + 90 + x = 360[/tex]

[tex]215 + x = 360[/tex]

[tex]x = 145[/tex]

Answer:

145

Step-by-step explanation:

there is 360 degrees in a circle . 85 , 40 and the right angle which is 90 add up to 215 so you subtract 215 from 360 to get 145