Answer:
505
Step-by-step explanation:
sn=2a+(n-1)d
 2*5+(100-1)5
 10+(99)5
 505
 
        
             
        
        
        
You basically have to use the quadratic formula to solve this since there are no factors of - 9 which add to give 6.

Then you use 

To find which numbers will go into what place inside the quadratic equation. 
So a = 1 (because x is alone) 
b = 6
c = -9
Then you solve it. I've included a picture of how I did it and I got the answer x=-3+-3sqrt2
 
        
             
        
        
        
Answer:
none of the above.. its correct answer is √39
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
18 stickers------1 page
212 stickers------x pages
For this we can write equation like that:
18*X = 212*1
18x=212
X=11.7777= It means Fiona needs 12 pages for using all these stickes.
 
        
             
        
        
        
<span>Volume   =   </span><span>π <span>• r² • height
Volume = PI * 5^2 * 10
</span></span>
<span>
<span>
<span>
Volume = 785.</span>4 cm^3
</span></span>
<span>Volume = PI * 5^2 * 4
</span>
<span><span><span>Volume = 314.</span>2 cm^3
</span>Jam consumed = </span><span>785.4 cm^3 -314.2 cm^3</span>
Jam consumed =
<span>
<span>
<span>
471.2 cm^3
answer is C
</span></span></span>