Answer:
20%
Step-by-step explanation:
2.5 min =(60×2.5)sec=150 sec
30sec to 150sec=30×100/150=20%
 
        
                    
             
        
        
        
Step-by-step explanation:

Collect like terms and simplify
[tex] -10n+30n=-36-24 \\ 20n = -60 [/tex]
Divide both sides of the equation by 20
[tex] 20n/20 = -60/20 \\ n=-3 [/tex]
 
        
                    
             
        
        
        
Comparision of volume of sphere and cube=0.98820059
coparision of surface area of sphere and cone=0.807582012
        
             
        
        
        
The slant height of the pyramid is 756 feet