Answer:
504 miles
Step-by-step explanation:
Make a proportion
 =
 = 
7/12 is 0.5833, so multiply 864 by that to find the number of miles
864(0.5833) = 504
 
        
                    
             
        
        
        
Okie so I can see you in a little while I’m
        
             
        
        
        
Answer:

Step-by-step explanation:

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<em>hope this helps....</em>
 
        
             
        
        
        
Answer:
a = -10
Step-by-step explanation:
-0.4a + 3 = 7
subtract 3 from each side
-0.4a + 3-3 = 7-3
-.4a = 4
Divide each side by -.4
-.4a/ -.4 = 4/-.4
a = - 10