A stem and leaf plot is a table where each of the data is divided into two parts. The stem, that is the first digit and the leaf is the last digits. Let's say that we have the following set of data.

If we want to make a stem and leaf plot of that data, we first write a column where we place the first digit of each number without repetition, like this:

These are the stems. Now the leaves are the last digit of each number put in order next to the corresponding first digit, like this:
 
 
        
             
        
        
        
You gotta use trig take the incomplete data and extrapolate from it
        
             
        
        
        
<span>10 is 40% percent of what </span><span>400 </span>maybe 
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation:
Angle 3 and angle 6 are congruent because they are alternate interior angles. Angle 3 plus angle 1 is 180 degrees. So you just subtract 123 from 180 (180-123) and you get 57 degrees.