Your answer is
+6 input
+2 output
Nonagon - 9 sides
Sum of interior angle of a polygon is (n-2)180 = x
N is the number of sides, so when you plug in 1260 for x, you get 9 for n
Answer:
A: 144/z
Step-by-step explanation:
Hopefully this helps!
For this case we must simplify the following expression:

To do this, we convert the mixed numbers to improper fractions:

Answer:

2 units i believe but not entirely sure