Answer:
i think it is B 
Step-by-step explanation: don't ask for an explanation cuz i wont give one
 
        
             
        
        
        
Answer:
x = 15
Step-by-step explanation:
As given, the equation 40 = 25 + x
As on the R.H.S of the equation, there is one constant and a variable x
As to isolate the variable we have to subtract the same constant so that that constant gives 0.
As we have the constant value 25 
So, subtract 25 from both side of the equation, we get
40 - 25 = 25 + x - 25
⇒15 = x
∴ we get
x = 15
 
        
             
        
        
        
Try it with some random number, like a=3.
        Is "3+0 = 0+3 = 0" true?    No.
If you were doing multiplication, then it would be true, but not with addition.
 
        
             
        
        
        
2X + (2X+10)= 34
Width is 6, Length is 11
6 x 11 is 66
Area is 66
        
             
        
        
        
Answer:
6:10
Step-by-step explanation:
3:5 is equivalent to 6:10 because you multiply both 3 and 5 by 2 and you get 6:10. every thing else is wrong