Start by adding 2 to both sides to get 3r^2 = 48. then divide both sides by 3 to get r^2 = 16. square root both sides to get r = 4.
        
                    
             
        
        
        
Answer:
y - 4 = 3(x- (-1)     --->      y-4 = 3(x+1)
Step-by-step explanation:
y - 4 = 3(x + 1)
y - 4 = 3x + 3
y = 3x + 7
then plug in (-1,4)
4 = 3(-1) + 7
4 = -3 + 7
4 = 4
Point slope form looks like:
y - y₁ = m(x - x₁)
 
        
             
        
        
        
It equals 1 74/81 which is less than 3 4/9
        
             
        
        
        
The area of the room must equal the sum of the areas of the tiles...
20*30=n(2*3)
600=6n
n=100
So 100 tiles are needed.
        
                    
             
        
        
        
Answer:
1,4,9,16,25,36,49
Step-by-step explanation:
The sequence is basically square numbers