Answer:
-16+12= -4
Step-by-step explanation:
When we mins 12 from 16 (16-12) we get 4. 
Similarly. When we minus 16 from 12 (12-16) we get -4 because we choose the sign with the greater number.
 
        
             
        
        
        
Answer:
(b)  (18, 27), because the rate of change of the function is 4/3
hope this helps!
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
![1\frac{7}{9} =\frac{16}{9} =[\frac{4}{3}] ^{2}](https://tex.z-dn.net/?f=1%5Cfrac%7B7%7D%7B9%7D%20%3D%5Cfrac%7B16%7D%7B9%7D%20%3D%5B%5Cfrac%7B4%7D%7B3%7D%5D%20%5E%7B2%7D)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
AOC = 20 degrees
Step-by-step explanation:
We know that FOB is 70 degrees, and COF is 90 degrees. So just add 70+90 and get 160 degrees. Then you subtract that from AOB which is 20 degrees.