Answer:
Step-by-step explanation:
Given:  39 = 0.01n
Move the decimal point on each side two places to the right:  3900 = n
 
        
             
        
        
        
Answer:
d-12=41
Step-by-step explanation:
If his age subtracted by 12 equals 41,you would set the equation up by subtracting 12 from d,which is Diego's age,equal to 41.
 
        
                    
             
        
        
        
Answer:
3 T 2,973 lb
Step-by-step explanation:

 
        
             
        
        
        
Answer can be wrote in two ways. -2.5a-5/6b or -5a/2-5b/6
        
             
        
        
        
It's easier to write if you convert 1/4 into 0.25.

Then you use algebra to find that he ran the mile in 6.4 minutes.