A true 
because 53•(41•11)=23,903 and (53•41)•11=23,903
Hope this helped
        
                    
             
        
        
        
Step-by-step explanation:
Right angle = 90°
(x + 3) + (x - 1) + (x + 1) = 90
3x + 3 = 90, x = 29.
Supplementary angles = Angles that add up to 180°.
x + (x + 104) = 180
2x = 76, x = 38.
 
        
             
        
        
        
I think you need to make the 6 positive and then add it to 13 which would give you a=19
        
             
        
        
        
Answer:
288 is your answer. Your welcome
 
        
                    
             
        
        
        
5*(60+3)
You should write 63 in this way 60+3