Answer: OPTION A.
Step-by-step explanation:
 First you must calculate the lenght of the side DF by applying the Pythagorean theorem, as following:
 
 Now you can find sin(E) as you can see below:
 
 Where:
 
 Then:
  
 
 
 
 
        
                    
             
        
        
        
Answer:
c.They rank-order the units of analysis in terms of specific variables
Step-by-step explanation:
An index is a way  of compiling one score from a variety of  questions or statement that represents a belief, feeling or attitude. 
Scales on the other hand measure levels of intensity at a variable level like how much a person agrees or disagrees with a particular statement. 
The one thing common to both  indexes and scales is that 
They rank-order the units of analysis in terms of specific variables.
 
        
             
        
        
        
Answer:
the answer would be 4
Step-by-step explanation:
4x2=8
8÷2=4
 
        
                    
             
        
        
        
Answer:
It's 1/2  I found this out by subtracting 3/4 - 1/3= 5/12 and if you put that into a decimal it would be .41. So that 1/4= .25 and 1/2= .50. You could figure out that it’s closed to 1/2.