Answer:
3 inches
Step-by-step explanation:
4 miles = 1 in
12 miles = 3 inches
Multiply both side of equation by 3.
9 sides.
N is the # of sides.
140 = ((n-2) x 180) / n
Multiply both sides by n
140 n = (n-2) x 180
Distribute the right side
140 n = 180 n - 360
Subtract 140 n and add 360 to both sides.
40 n = 360
n = 9
Answer:need graph