Answer:
21N:7m/s
? :10m/s
21x10=210
210÷7=30N
Your final answer is 30N
Step-by-step explanation:
This is called direct propotion 
it involves close multiplication 
 
        
             
        
        
        
Answer:
n= 18 over 5
Step-by-step explanation:
 
        
                    
             
        
        
        
The answer is 8x I believe 
        
                    
             
        
        
        


Therefore, the man is shorter than 141 centimeters.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
the bottom one on the right