Answer:
lol
have a good day :)
Step-by-step explanation:
 
        
                    
             
        
        
        
B. SAS
Pretty much the way I look at it, there is one angle, and 2 sides beside it. Easiest way for me to explain.
 
        
                    
             
        
        
        
7x+y=11 where y= -5                                                                                              So, when we substitute y in the equation then,
7x + (-5) = 11 that is 7x - 5 = 11....
So, B. is the right answer.
        
             
        
        
        
Answer:
The expressions which equivalent to   are:
 are:
  ⇒ B
  ⇒ B
  ⇒ C
 ⇒ C
Step-by-step explanation:
Let us revise some rules of exponent
Now let us find the equivalent expressions of  
A.
∵ 4 = 2 × 2
∴ 4 =  
∴   =
 =   
 
- By using the second rule above multiply 2 and (n + 2)
∵ 2(n + 2) = 2n + 4
∴   =
 =   
  
B.
∵ 4 = 2 × 2
∴ 4 =  2²
∴   = 2² ×
 = 2² ×   
 
- By using the first rule rule add the exponents of 2
∵ 2 + n + 1 = n + 3
∴    =
 =   
 
 
C.
∵ 8 = 2 × 2 × 2
∴ 8 =  2³
∴   = 2³ ×
 = 2³ ×   
 
- By using the first rule rule add the exponents of 2
∵ 3 + n = n + 3
∴   =
 =   
 
D.
∵ 16 = 2 × 2 × 2 × 2
∴ 16 = 
∴   =
 =  ×
  ×   
 
- By using the first rule rule add the exponents of 2
∵ 4 + n = n + 4
∴   =
 =   
 
E.
 is in its simplest form
 is in its simplest form
The expressions which equivalent to   are:
 are:
  ⇒ B
  ⇒ B
  ⇒ C
 ⇒ C
 
        
             
        
        
        
You just flip each of the numbers spots - the x and y