Answer:
Step-by-step explanation:
B=2h(a+b) #the numerator goes to the other side, the denominator then just makes it B
B/2h=a+b
2h=a+b/B
2h-a=b/B
2h-a=b(1) #factorise
 
        
             
        
        
        
Answer:
[-8,4]
Step-by-step explanation:
you look at the x-axis. The end points of the graph are -8 and 4, thus the domain would be [-8,4] as it is always written in left to right or bottom to top value. 
hope it helps. 
 
        
             
        
        
        
Answer:
The given description is equivalent to the algebraic expression,

Step-by-step explanation:
The given description is , 
'The square of the ratio of 11 and k' 
which is equivalent to the algebraic expression,

 
        
             
        
        
        
The fraction is one whole aka one