8/18 because just times them by 2 and it will be 8/28.
        
                    
             
        
        
        
A: 55
b: 50
c: 100
the sum of all the angles of a triangle must equal 180
        
             
        
        
        
Answer:
The length of each side of the city is 250b
Step-by-step explanation:
Given
 --- tree distance from north gate
 --- tree distance from north gate
 --- movement from south gate
 --- movement from south gate
 --- movement in west direction from (b)
 --- movement in west direction from (b)
See attachment for illustration
Required
Find x
To do this, we have:
 --- similar triangles
 --- similar triangles
So, we have the following equivalent ratios

Where:

Substitute these in the above equation


Express as fraction


Cross multiply

Open bracket

Rewrite as:

Expand

Factorize

Factor out x + 284

Split

Solve for x

x can't be negative;
So:

 
        
             
        
        
        
90% of <span>£41 = 90/100 × 41 = </span><span>£36.9
</span>£41 decreased by 90% = 41 - 36.9 = <span>£4.1</span>