Answer:
Step-by-step explanation: 5795f
 
        
             
        
        
        
Answer: 12.5%
Step-by-step explanation:
80x 12.5%=10 
80+10=90
 
        
                    
             
        
        
        
Answer:
 
 
Step-by-step explanation:
we know that
In a join variation, If j varies jointly with respect to g and v, the equation will be of the form  
 
where k is a constant
step 1
Find the value of k
we have
j=2,g=4,v=3
substitute and solve for k
 
 
 
 
 
 
The equation is equal to
 
 
step 2
Find the value of j when g=8,v=9
substitute the values in the equation and solve for j
 
 
 
 
 
        
             
        
        
        
Answers:
a= 5x±
  ------------------------------
                 6  
u=± 
   -------------------------
                 2
<h2>Brainliest please!!!! It took me a while to figure this out!</h2>