Answer:
- The mean length of 10 children's big finger is 8.1 cm 
Average length of all the 10 children's finger is (8.1×10) cm = 81 cm. 
- The mean length of 11 adult's big finger is 14.1 cm
Average length of all the 11 adult's big finger is (14.1×11) cm =155.1
- Mean length of these 21 people's big finger is
 
- Hence, <em><u>11.24</u></em> is the right answer.
 
        
             
        
        
        
Answer:bbdhajaiuw
Step-by-step explanation:huejrjthrb
 
        
             
        
        
        
0 is 500mg and the numbers above are larger.
        
             
        
        
        
A.
Let x = age of Samantha.
Then x - 2 = age of Emily,
and x + 2 = age of Lauren.
b.
x - 2 + x + x + 2 = 42
c.
x - 2 + x + x + 2 = 42
3x = 42
x = 14
x - 2 = 14 - 2 = 12
x + 2 = 14 + 2 = 16
The ages of the sisters are 12, 14, 16.