Answer:
The measure of A is 30
Step-by-step explanation:
In order to find the value of A, we first need to find x. We can do this by measuring all the interior angles and setting equal to 180. Since 8x + 4 is vertical with the interior angle, we know that it is the same. Also since 130 creates a supplement with the interior angle, we know that the interior angle is equal to 50.
3x - 6 + 8x + 4 + 50 = 180
11x + 48 = 180
11x = 132
x = 12
Now that we have x, we can find A.
A = 3x - 6
A = 3(12) - 6
A = 36 - 6
A = 30
