21. if Sam's erasers are represented by x, then sari, who has three times more, would be represented by 3x. since you are adding two together to get 28, the equation would be 28=3x+x. Simplify to 28=4x, divide by 4 to isolate x, where x=7. multiply this by 3 to get sari's amount.
        
             
        
        
        
Not really, is this a rhetorical question? lol
        
             
        
        
        
It will take 3 laps. 90*35=3150 1000 m = 1 km
        
             
        
        
        
Answer:
The coordinates of P' are (4.8,-4.8).
Step-by-step explanation:
The rule of dilation  represent the dilation with scale factor 2.4 and center at origin.
 represent the dilation with scale factor 2.4 and center at origin.
If the scale factor of the dilation is k and the center is (0,0), then

Since the scale factor is 2.4, therefore 

From the given figure it is noticed that the coordinates of P are (2,-2). The coordinates of P' are


Therefore the coordinates of P' are (4.8,-4.8).