Answer:
The petrol used was 0.1 litre for every 1 kilometre.
 
 
        
             
        
        
        
Answer:
Im not 100% sure but i can tell you it is (D)
Step-by-step explanation:
 
        
             
        
        
        
Answer: y=5+4/5
Step-by-step explanation:
1) Move all terms to the left:
y-(29/5)=0
2) Add all the numbers together, and all the variables
y-(+29/5)=0
3) Get rid of parentheses
y-29/5=0
4) Multiply all the terms by the denominator
y*5-29=0
5) Multiply elements
5y-29=0
6) Move all terms containing y to the left, all other terms to the right  
5y=29
y=29/5
y=5+4/5
 
        
             
        
        
        
1 dozen=12 doughnuts so 12x291=3,492 doughnuts 
        
             
        
        
        
Answer:
None
Step-by-step explanation:
Note that we have 6x on both sides here.  If we subtract 6x from both sides, the equation becomes -6 = +15, which is never true.
Thus, this equation has NO SOLUTION.