The answer is 18. Because 7*2=14+4=18
Answer:
10 sides,that is, a decagon or 10gon
Step-by-step explanation:
If the exterior angle is 36° then numbers of sides=

Therefore
n=360°÷36°=10
∠ADC = 112°
∠ADC =6x + 7 + 12x - 3
Equate both:
6x + 7 + 12x - 3 = 112
Solve for x :
6x + 7 + 12x - 3 = 112
Combine like terms:
18x + 4= 112
Take away 4 from both sides:
18x = 108
Divide both sides by 18:
x = 6
Find ∠ADB:
6x + 7 = 6(6) + 7 = 43
Answer: ∠ADB = 43°
Coordinate of A are (0,0)
Coordinates of A' are (5,2)
We can find the distance from A to A' using the distance formula:
Thus, rounded to nearest hundredth, AA' is equal to 5.39
Answer:
-4 1/4 When you subtract -3 3/8 from 7/8 you will get this answer.
Hope this helps