Answer:
BK=3
CK=2.4
Step-by-step explanation:
Hope it works
 
        
             
        
        
        
Answer:
See Below. 
Step-by-step explanation:
We want to show that the function: 

Increases for all values of <em>x</em>. 
A function is increasing whenever its derivative is positive. 
So, find the derivative of our function: 
![\displaystyle f'(x) = \frac{d}{dx}\left[e^x - e^{-x}\right]](https://tex.z-dn.net/?f=%5Cdisplaystyle%20f%27%28x%29%20%3D%20%5Cfrac%7Bd%7D%7Bdx%7D%5Cleft%5Be%5Ex%20-%20e%5E%7B-x%7D%5Cright%5D)
Differentiate: 

Simplify: 

Since eˣ is always greater than zero and e⁻ˣ is also always greater than zero, f'(x) is always positive. Hence, the original function increases for all values of <em>x.</em>
 
        
             
        
        
        
Answer:
-1.2
Step-by-step explanation:
 
        
             
        
        
        
 Step-by-step explanation:
areas of the figure = 130.25 ft ².
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