Answer:
18x+27y
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
I THINK 96
Step-by-step explanation:
11x11=121
5x5=25
121-25=96
 
        
             
        
        
        
Answer:
39 degrees
Step-by-step explanation:
Add: 39+54+48=141
180 (degrees of a straight angle) minus 141=39
39 degrees
Hope I helped!! :)
Brainliest?!?!
Stay safe and have a good day/night/afternoon!!!
 
        
             
        
        
        
Answer:
The first one and the second one.
Step-by-step explanation:
 
        
                    
             
        
        
        
<span><span>Each time
we add a side (triangle to quadrilateral, quadrilateral to pentagon, etc), we </span>add
another 180°<span> to the total of the
interior angle.</span></span>
 
Triangle,
sum interior angle is 180
Square,
is 360
Pentagon is
540
 
So the
formula is
<span>180 ( n –
2 )</span>