Answer:
first one yes
Step-by-step explanation:
second one its 
39x+10=180
 
        
                    
             
        
        
        
X=7. The two segments on the bottom as well as on the diagonal are the same length. This shows that the entire triangle and the inner triangle on the right are similar. So if we call the length of the bottom 2y, then 84/2y=6x/y. Solving this we get 84=12x, and so x=7
        
             
        
        
        
129.00 divided by 25% will give you the answer try it tell me if it worked :)
 
        
             
        
        
        
The answer is SSS congruency. 
AB=CD (given)
BC=DA (given)
AC=AC (common side)
∴ΔADC≅ΔABC
Please mark brainliest if this helps!
 
        
             
        
        
        
Answer:
   see below
Step-by-step explanation:
Option 1: the two solution sets overlap at <em>x=1</em>.
Option 2: the two solution sets do not overlap; no solution.
Option 3: together, the two set describe <em>all real numbers</em>.