Answer:
Step-by-step explanation:
6x-1=2x+5+4x-6
separate the variables in one side, numbers on the other side
6x-2x-4x=1+5-6
0=0
one solution
 
        
             
        
        
        
The mass of the first shipment at time t is

The mass of the second shipment at time t is

At time t, the ratio of m₁ to m₂ is

Therefore as a percentage,

Answer: B. 81.2%
 
        
        
        
Answer:
8/55
Step-by-step explanation:
4/5 DIVIDED 5 1/2 = 8/55
 
        
                    
             
        
        
        
x-3y=7    2x-6y=12
You can multiply -2 in the first equation like this. 
x+6y=7
2x-6y=12
Now you can eliminate 6y and -6y so cross them out and do x-2 which is -1 and 7-12 which is -5 -1/-5 would be .2 
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Answer:
35/4 minutes per mile
Step-by-step explanation:
rate = time/distance, therefore the answer is 35/4