Answer:
k= 12 x= 5
Step-by-step explanation:
 
        
             
        
        
        
For every 3 apples, there are 6 oranges
        
             
        
        
        
First work out the parenthesis:
9x⁴y⁴ / 3y²
Then get rid of the denominator using 9/3=3 and y⁴/y² = y²
3x⁴y² is the simplest form.
        
             
        
        
        
Let a =107°   and b=42°;
So cos 107° cos 42° + sin 107° sin 42°  = cosa.cos42 + sina.sinb = cos(a-b)
and cos 107° cos 42° + sin 107° sin 42°  = cos(107-42) = cos(65°)
        
                    
             
        
        
        
Answer:
you'd get the expression 6.37+7.8k