360 to 30 can be written as 
360:30 and call also be written as 
360/30
360 to 30 simplified can be expressed as a ratio like 
12:1, 
12 to 1, or 
12/1
 
        
                    
             
        
        
        
15 + 0.2x = 20 + 0.15x
0.05x = 5
x = 100 miles
        
             
        
        
        
Answer:
C. 9
Step-by-step explanation:
81 = 9 x 9 
18 = 9 x 2
so the greatest common factor (GCF) of 81 and 18 : 9
Answer is C. 9
 
        
                    
             
        
        
        
<span>t+3/2 = 1/2 // - 1/2
t+3/2-(1/2) = 0
t+3/2-1/2 = 0
t+1 = 0 // - 1
t = -1</span>
        
             
        
        
        
                                         x²  -  4x  - 12  =  0
Factor the left side:      (x + 2) · (x - 6)  =  0
The equation is true if either factor is zero.
If  (x + 2) = 0  then    x = -2 .
If  (x - 6) = 0  then     x = 6 .