Answer:
(4+5-2+1)- (7+3-8+6) = 0
Step-by-step explanation:
you look for what numbers when subtracted equal zero (in this case each of the parentheses is 8) in each of the parentheses and combine them at the end to form the final equation.  
 
        
             
        
        
        
Answer:
because they are supplementary angles 
 
        
             
        
        
        
The second graph because 2x5=10, 4x5=20, 6x5=30!
        
             
        
        
        
Answer: lower bound = 9550
<u>Step-by-step explanation:</u>
Since the number is rounded to the nearest hundred, the actual value is somewhere between 9550 (which rounds up to 9600) and 9649 (which rounds down to 9600).
The lower bound is: 9550
The upper bound is: 9649
 
        
             
        
        
        
The simplified expression of   is
 is  .
.
Solution:
Given expression is  .
.
To simplify the given expression.

Using exponent rule: 

Using another exponent rule: 


Using exponent rule: 


Hence the simplified expression of   is
 is  .
.