Answer:
The width of billboard is "[x]" and the height of billboard is "[y"]. If total area of billboard is  then
 then  
Step-by-step explanation:
•	The total width of billboard is [x]. Therefore the width of printed area will be (x-10) by excluding margin of left and right side.
•	The total height of billboard is [y]. Therefore the height of printed area will be [(y-6)]  by excluding the margin of top and bottom from the total height.
•	To find the printed area of billboard calculations are given below:


On taking the first order derivative of A
![\[A'=-6+\left( \frac{90000}{{{x}^{2}}} \right)\]](https://tex.z-dn.net/?f=%5C%5BA%27%3D-6%2B%5Cleft%28%20%5Cfrac%7B90000%7D%7B%7B%7Bx%7D%5E%7B2%7D%7D%7D%20%5Cright%29%5C%5D)

•	Hence ![\[x=10\sqrt{150}\]](https://tex.z-dn.net/?f=%5C%5Bx%3D10%5Csqrt%7B150%7D%5C%5D) and
 and ![\[y=\frac{900}{\sqrt{150}}\]](https://tex.z-dn.net/?f=%5C%5By%3D%5Cfrac%7B900%7D%7B%5Csqrt%7B150%7D%7D%5C%5D)
Learn More about Differentiation Here:
brainly.com/question/13012860
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
Ur mom
 
        
             
        
        
        
-5.9, -4.6, -1/4, 1/2, 1.75, 2, 18, 21.
 
        
             
        
        
        
Answer:
8.91
Step-by-step explanation:
Given:  0.95 = log x,
we can conclude that:
     0.95            log x
10             =  10
                                                           0.95
which in turn is equivalent to x = 10            whose value is  8.91