The negative externalities must be present.
        
             
        
        
        
Answer:
Step-by-step explanation:
Wat is the question lol
 
        
             
        
        
        
Step-by-step explanation:
Let F = The number of $5 bills and T = the number of $10 bills.  She has 15 bills total, so:
  
F+T = 15                
T = 15-F
  
She has $120 total:
  
$120 = ($5)*F + ($10)*T
$120 = $5*F + ($10)*(15-F)         [Substitute 15-F in place of T]
120 = 5F + 150 - 10F
-30 = -5F
  
6 = F
  
Check:
T= 15-F = 15=6 = 9
  
$120 = ($5)*6 + ($10)*9
$120 = $30 + $90
$120 = $120
 
        
             
        
        
        
The answer is 1.34 . if you round it then its 1
        
                    
             
        
        
        
Answer:
The tower is approximately 381 feet high.
Step-by-step explanation:
Refer to the sketch attached. The height of the tower can be found in two parts:
- The part above the window, and 
- The part under the window.
Each part can be seen as a leg of a right triangle. The other leg is the distance between the building and the tower and is 300-feet long. The angle opposite to the leg is given. 
- The length of the upper part is  feet. feet.
- The length of the lower part is  . .
The height of the tower is the sum of the two parts:
 feet.
 feet.