Answer:
n is 41.67 degrees
Step-by-step explanation:
At the intersection point of two lines, there are two angles, a and b. The sum of these two angles is 180.
In this question:
One of the angles is (3n - 28)
The other is 83.
Then
[tex]3n - 28 + 83 = 180[/tex]
[tex]3n + 55 = 180[/tex]
[tex]3n = 180 - 55[/tex]
[tex]3n = 125[/tex]
[tex]n = \frac{125}{3}[/tex]
[tex]n = 41.67[/tex]