Answer:
82 kg
Step-by-step explanation:
To find the mean of a set of values, we must add them up and divide by the number of values.
Step 1, adding the values:

Step 2, dividing by the # of terms:
There are 9 terms in total.

To the nearest kilogram, we can round 81.556 into 82.
The mean mass of the 9 men was  kg.
 kg.
<em>I hope this helps! Let me know if you have any questions :)</em>
 
        
                    
             
        
        
        
This is all I can do for now, I might be back to solve the rest, I’m sorry.
 
        
        
        
Answer:
length of each square=  ≈ 6.6
 ≈ 6.6
the length of the rectangle = 2 ≈ 13.1
 ≈ 13.1
width of the rectangle ≈  ≈ 6.6
 ≈ 6.6
Step-by-step explanation:
 
        
             
        
        
        
50=t/2+8
50-8=t/2
42=t/2
2×42=t
84=t
check: 50=84/2+8
50= 42+8
50=50