Answer: a = -5 
Step-by-step explanation:
2(a+3)=-4
Distribute 
2a+6=-4
subtract the six with the four and you get -10 
-6-4=-10 
now divide 2a with -10 
you get a= -5 
you can plug the answer in 
 
        
                    
             
        
        
        
Answer:
 18
Step-by-step explanation:
I2=h2+r2
25(2)=h2+7(2)
50=h2+14
-14 -14
36=h2
÷2 ÷2
18=h
 
        
             
        
        
        
I’m not 100% sure but I think it’s y=5x+20
        
             
        
        
        
Answer:
f(4)= 3
Step-by-step explanation:
f ( x ) = 2 x - 5
then f(4)= 2(4)-5
f(4)= 8-5
f(4)= 3
 
        
                    
             
        
        
        
Answer:
2/3
Step-by-step explanation:
It would be 2/3 because on the top you add two and then on the bottom you add three each time.