X = total miles run
4.6 + 0.78 + 3.4 = x
8.78 = x......so he ran a total of 8.78 miles
        
             
        
        
        
Answer:
No solution?
Step-by-step explanation:
0 doesn't equal to -18
 
        
             
        
        
        
Answer:
Answer is 360
to find each of the angles take 360 ÷ by the number of sides , in this case is 360 ÷ 6 = 60
 
        
                    
             
        
        
        
Answer:
-4
Step-by-step explanation:
If anything the first thing you would want to do is covert your fraction so a decimal. (-4 1/2) as a decimal is -4.50. From there it would be easier to divide. to get an answer of -4
 
        
             
        
        
        
Additive property of equality states that:
if a=b, then a+c = b+c, 
that is, if 2 quantities of the same value are added the same quantity, they are again equal.
In our problem a=AD, b=DB,    and c= CD=DE
thus a+c=b+c means <span>AD + CD = DE + DE, 
by the </span><span>Addition Property
Answer: </span><span>Addition Property
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