Answer:
x=5 , x=4, x=2
i got this answer by setting the x-5=0 then solve for x. same for each x-5, x-4, x-2.
 
        
                    
             
        
        
        
Answer:
X-61=100
X=100-61
X=39%
Step-by-step explanation:
 
        
             
        
        
        
Answer:20x^4+55x^3+15x^2-2/5x^2
Step-by-step explanation:
 
        
             
        
        
        
Answer:
4.04 x 10^0 people/km^2 (x 10^0 is fairly redundant but if the answer is required in standard form then include it)
Step-by-step explanation:
Population Density = Population/Area
= 3.11 x 10^7 / 7.69 x 10^6
= 31,100,000 / 7,690,000
= 3110 / 769 
= 4.04
= 4.04 x 10^0
 
        
             
        
        
        
HAVE NO IDEA! this takes alot of thinking to figure it out