Step-by-step explanation:
12 - 9 + c = 12
-9 + c = 12 - 12
- 9 + c = 0
Therefore c = 9
Hope this helps.! 
 
        
                    
             
        
        
        
It depends on the function
        
                    
             
        
        
        
Answer:
x = 6
x = 1
Step-by-step explanation:
(3x² - 2x + 5) - (2x² - 5x + 1)
= 3x² - 2x² - 2x - 5x + 5 + 1
= x² - 7x + 6
= (x - 6)(x - 1)
x - 6 = 0
x = 6
x - 1 = 0
x = 1
 
        
                    
             
        
        
        
Answer:
The opposite of 50 feet below sea level is 50 feet above the sea level.
Step-by-step explanation:
Below is negative 50 and above is positive 50 so its +50 the opposite of -50.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
<u>Use tan to solve:</u>
- tan = opposite leg /adjacent leg
- tan 39 = h/500
- h = 500 tan 39 deg
- h = 404.89 ft