Wll not just this question, but whenever you need to find average, you have to:
Wait, for example let's take ur question:
1st step we will add up all the values aka heights:
5.4+6.12+7.02+4.9+6.25=29.69
And then how many values did you take???
Its, 5 values
1st value= 5.4
2nd value=6.12
aaand so on....
However, then we will have to divide the sum by no.of values
29.69÷5=5.938
Aaand this is your FINAL ANSWER
Done!!!!
Hope I helped you!!!
 
        
                    
             
        
        
        
Answer:
b and c 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
7/12
Step-by-step explanation:
4 x 3 = 12 (LCD) 
3/12 + 4/12 = 7/12
No simplifying done, 
7/12 is the answer.
Hope this helped :) 
 
        
             
        
        
        
Answer:
(8n/10)
8 × 5 = 40
40 ÷ 10 = <em><u>4</u></em>
 
        
             
        
        
        
The answer to your question is y=1