Answer:
Yes,  is a solution
 is a solution
Step-by-step explanation:
Recall that  . By replacing
. By replacing  in the given trigonometric equation, we get 0 (zero) as a result, so this value is a solution:
 in the given trigonometric equation, we get 0 (zero) as a result, so this value is a solution:

 
        
             
        
        
        
Answer:
One.
Step-by-step explanation:
The reason why is because 12-5 = 7, meaning that your lowest length has to be 7. meaning, that you can only do one triangle.
 
        
                    
             
        
        
        
Answer:11x + 5
Step-by-step explanation:1/3 times 9X is 3x. 1/3 times 15 is 5. Now you have 9x + 5 + 2x
9x + 2x = 11x
 
Final answer: 11x + 5
 
        
             
        
        
        
This polynomial has 4 terms