No, the product is not valid. The number of columns of 

 (five) should match the number of rows of 

 (four).
 
        
        
        
Answer:
i dont speak Spanish 
Step-by-step explanation:
lol
 
        
             
        
        
        
The answer is 4 m/s.
In the first 5 seconds, a body travelled 10 meters. In the first 10 seconds of the travel, the body travelled a total of 30 meters, which means that in the last 5 seconds, it travelled 20 meters (30m + 10m).
The relation of speed (v), distance (d), and time (t) can be expressed as:
v = d/t
We need to calculate the speed of the second 5 seconds of the travel:
d = 20 m (total 30 meters - first 10 meters)
t = 5 s (time from t = 5 seconds to t = 10 seconds)
Thus:
v = 20m / 5s = 4 m/s
        
                    
             
        
        
        
Answer:
Fraction form: x = ln(5)/ln(10)
Decimal form: 0.69897000
please mark brainliest 
 
        
             
        
        
        
Your answer should be -x+3