Step-by-step explanation:
Each interior angle=140°
(n-2)180°/n=140°
180°n-360°/n=140°
180°n-360°=140°n
180°-140°=360°
40°n=360°
n=360°/40°
n=9
Hence, the number of sides of the polygon is 9.
It is nonagon .
 
        
             
        
        
        
Answer: 90
Step-by-step explanation: 
45.5-.5=45
45^2=90
 
        
             
        
        
        
Yea his answer is right ^^
        
             
        
        
        
Answer:
1/4 is ur answer :)
Step-by-step explanation:
Hoped It Helped
 
        
             
        
        
        
Let 's' represent the amount of sales.
Plan 1:


Plan 2:


Equating the two plans together and solving for the amount of sales,

Collecting like terms,

Divide both sides by 0.08,

Hence, the amount of sales is $8,750.