Answer:
11.725%
Step-by-step explanation:
Given that : 
True value = 0.904 seconds 
Measured time = 1.010 seconds
Experimental error :
(|measured value - True value | / true value) * 100%
(|1.010 - 0.904| ÷ 0.904) * 100%
= 0.106 / 0.904 * 100%
= 0.1172566 * 100%
= 11.725%
 
        
                    
             
        
        
        
The answer is 10 pairs of shoes.
The first ratio is 10:5. 10 socks per 5 pairs of shoes. You have 20 socks now instead of 10. You just double the ratio. 20 socks per 10 pairs of shoes. 20:10.
        
             
        
        
        
Answer:
31.42cm
Step-by-step explanation:
 
        
             
        
        
        
Answer: 2.5, 21/8, √25, pi, √19
        
             
        
        
        
Answer:
8/55
Step-by-step explanation:
4/5 DIVIDED 5 1/2 = 8/55