Answer:
Rational 
Step-by-step explanation:
 simplifies to
 simplifies to  .
. 
Therefore, it is rational. 

<em>Brainliest Appreciated. </em>
 
        
             
        
        
        
Answer: The answer is 2,860.
Step-by-step explanation:
 
        
             
        
        
        
For this case we must simplify the following expression

We know that, by definition:

So, rewriting the expression we have:

We add similar terms taking into account that:
- Equal signs are added and the same sign is placed.
- Different signs are subtracted and the major's sign is placed:

Answer:

 
        
             
        
        
        
To find the interquartile range, you will list the data that is presented in the stem and leaf plot.
Find the median of the data (30.5)
Find the median of the lower half and the median of the upper half.
Subtract these two values.
The data are <u>20</u>, 25, 30, 30, 31, 40, 41, <u>49</u>.
                            27.5                40.5
40.5-27.5 = 13
The interquartile range is 13.