to ketha ay ayu  uhh uh la toca bella 
 
        
                    
             
        
        
        
The answer to your question is 20
        
             
        
        
        
His/her lowered score was most likely due to statistical regression.
<h3>How to determine the reason?</h3>
The missing options in the question are:
A. compensation rivalry  B. Demoralization C.  Differential selection
D.  Testing E.  Statistical regression
From the question, we have:
- September = 99th percentile
- February = 90th percentile
A change (whether higher or lower) in the score is caused by statistical regression.
This is so because several variables could attribute to the change in the score.
The relationship between these variables is referred to as statistical regression
Read more about statistical regression at:
brainly.com/question/25987747
#SPJ12
 
        
             
        
        
        
-16w-26+9w=-61
-16w+9w=-61+26
-7w=-35
w=5
        
                    
             
        
        
        
Greatest Common Factors (GCF) can help you in real life problems with fractions and measuring things. Below is a real life example.
Let's say you want to send cookies into one of two classes and want to make sure you have an even number per student. You know that one class has 8 students and the other has 10 students. How many cookies do you make?
Answer: All you have to do is figure out the biggest number that goes into each number equally (division). In this case the answer would be 2. 
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