
add 2q to both sides.

subtract 5 to both sides.

divide 5 to both sides.

the answer is: 
 
 
 
        
             
        
        
        
Answer:
12 cm
Step-by-step explanation:
multiply 10 by .2
10 × .2 = 2
add 2 to 10
2 + 10 = 12 cm
 
        
             
        
        
        
Use the Cosine Rule to find this
cos <B  = [b^2 - a^2 - c^2] /  -2ac 
               =  [ 4^2 - 10^2 - 11^2] / -2*10*11
               =   0.93182
so m < B  =   21.3 degrees to nearest tenth.  Answer