Answer:
Speed of Chris Huber = 30.726 m/s
Time taken by Sam = 5.55 s
Step-by-step explanation:
Given:
Distance = 200 m
Time taken by Chris Huber = 6.509 s
Now, 
Speed of Chris Huber = 
or
Speed of Chris Huber = 
or
Speed of Chris Huber = 30.726 m/s
Speed of Sam = Speed of Chris Huber + 19.0 km/h
Now,
1 km/hr = 0.277778 m/s
thus, 
19.0 km/h = 19.0 × 0.27 = 5.278 m/s
thus, 
Speed of Sam = 30.726 + 5.278 = 36.004 m/s
therefore, 
Time taken by Sam = 
or
Time taken by Sam =  = 5.55 s
 = 5.55 s
 
        
             
        
        
        
Answer:
7 hundredths
Step-by-step explanation:
add 4 to 6 and take away 3
 
        
                    
             
        
        
        
_________X=30____
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