Answer:
 participant bias
Step-by-step explanation:
 Participant bias is sometimes called as subject bias. it is referred to as the tendency of a subject that forces them to act in an experiment. it is held because that they think researchers is looking up to them to act. it occurs only when the subject has detail knowledge about the study or project.
Participant bias is a subject initiative to know about the inner thought of the researcher so the subject acts according to what the researcher wants to hear.
 
        
             
        
        
        
Answer:
See step by step 
Step-by-step explanation:
 For A. use any two factors that multiply to 100 that isn't 25 and 4.
For b Use one obtuse angle (angle over 90 degree) and two acute angles. Make sure they add up to 180.
 For c Use any two values that add up to 52 since they didnt establish y as the midpoint.
For d. measure of angle 1 is 45 and measure of angle 2 is 45 degrees
 
        
                    
             
        
        
        
Answer:
B
Step-by-step explanation:
So we have the expression: 

Since 5 goes into both 15 and 50, we can factor out a 5. First, rewrite the numbers as: 

Factor out the 5: 

So, our answer is B
And we're done!
 
        
             
        
        
        
Answer:
Step-by-step explanation:
5
 
        
             
        
        
        
10 1/2-4 1/4= 6 1/4. 6 1/4-3 2/3= 2 7/12. They used 2 7/12 ft or 2ft 7in of wood to fix the stairs.