l=51
m=78
n=51
n and l have the same value since it’s an isosceles triangle, so that’s why I doubled 4x-9
 
        
             
        
        
        
It would be 1/64 I hope this helps with your question.
        
                    
             
        
        
        
Answer:
possible lengths
45 and 2 
3 and 20
5 and 18 
15 and 6
10 and 9  
there perimeter will be 
94
46
46
27 
38
answer to this question is  15 and 6
 
        
             
        
        
        
Answer:
D) L=50 W=50
Step-by-step explanation:
Just "plug and chug" these numbers and see which doesn't work. 
A is not it, 20+30=50 (then *2 because we need 4 sides not just 2) 50*2=100
B isn't it, 10+40=50*2=100
C ain't it either 49+1=50*2=100
D is the answer 50+50=100*2=200