Your answer would be 51.6
        
             
        
        
        
Answer:
The tires are spinning at 660.49 revolutions per minute.
Step-by-step explanation:
The speed of the tires (v) is the same that the speed of the car, so to find the angular velocity of the tires we need to use the equation:

Where:
r: is the radius of the tires = d/2 = 28 inches/2 = 14 inches
 
               
Therefore, the tires are spinning at 660.49 revolutions per minute.
    
I hope it helps you!           
 
        
             
        
        
        
Answer:
10.75
Step-by-step explanation:
The cost of an adult ticket is £6 more than that of a child ticket, so will be shown by c+6. 
Now, we are told that the cost of four child tickets and two adult tickets is £40.50, so we can put this in an equation and solve for c:
(c+6)+(c+6)+c+c+c+c=40.50
6c+12=40.50
6c=28.50
c=4.75
so, a childs ticket is 4.75
now to find the cost of an adult ticket you add 6,
4.75 + 6 
= 10.75
 
        
             
        
        
        
Subtract 41.58 by 9 then devide that number by 8.07 to get the amount of pounds purchased your answer is 6