Step-by-step explanation:
I haven't used distance formula or Pythagoras theorem, not sure why that's given at the bottom of your question. check the image. that is how I solved it
 
        
             
        
        
        
Answer:

Step-by-step explanation:
The Fundamental Theorem of Calculus states that: 
![\displaystyle \frac{d}{dx}\left[ \int_a^x f(t)\, dt  \right] = f(x)](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7Bd%7D%7Bdx%7D%5Cleft%5B%20%5Cint_a%5Ex%20f%28t%29%5C%2C%20dt%20%20%5Cright%5D%20%3D%20f%28x%29)
Where <em>a</em> is some constant. 
We can let: 

By substitution: 

Taking the derivative of both sides results in: 
![\displaystyle g'(s) = \frac{d}{ds}\left[ \int_6^s g(t)\, dt\right]](https://tex.z-dn.net/?f=%5Cdisplaystyle%20g%27%28s%29%20%3D%20%5Cfrac%7Bd%7D%7Bds%7D%5Cleft%5B%20%5Cint_6%5Es%20g%28t%29%5C%2C%20dt%5Cright%5D)
Hence, by the Fundamental Theorem: 

 
        
             
        
        
        
Total value of 11 numbers
14*11
154
Total value of 9 numbers
9*9
81
Total value of other 2 numbers
154 - 81
73
So average of other 2 numbers
73 / 2
36.5
        
             
        
        
        
Answer:
Step-by-step explanation:
If each successive y value is the same distance above the previous y value, the situation is linear.
 
        
                    
             
        
        
        
Answer: £245
Step-by-step explanation:
24.5 hours from wednesday to saturday
24.5 X 10 = 245