Answer:
y = 9.54
and, x = 0.08
Step-by-step explanation:
Given that
x - 2y = -19 .......................(1)
3x + 5y = 48 ...............(2)
Based on the above information
Multiply by 3 in equation 1
So, 
3x - 6y = -57
3x + 5y = 48
-     -        - 
-11y = -105
y = 9.54
So, the x would be 
x - 2(9.54) = -19
x - 19.08 = -19
x = -19 + 19.08
x = 0.08
 
        
             
        
        
        
Answer:
I think 
11cm²-5cm²=121+25
and the square root of that will give you 12.08
and that's the answer
 
        
                    
             
        
        
        
Answer:
180
Step-by-step explanation:
Since the type of trapezoid is not listed, I cannot really explain, sorry :/
 
        
             
        
        
        
Hey the answer to your question is -6.4