B because it is the midpoint for segment shown above
        
             
        
        
        
The answer is -20.
The negative part shows the loss and 20 is the amount of money
        
             
        
        
        
Answer:
The kinetic energy of the roller coaster is 1600000 J.
Step-by-step explanation:
Given:
Mass of the roller coaster is 8000 Newton's and speed 20.0 meters/seconds.
Now, we need to find the kinetic energy  of the roller coaster.
 of the roller coaster.
So, Mass of roller coaster (m) = 8000 N. 
Velocity of roller coaster (v) = 20.0 m/s. 
Now, putting the formula of kinetic energy:





Therefore, the kinetic energy of the roller coaster is 1600000 J.
 
        
             
        
        
        
Answer:
2.3 x 10⁴
Step-by-step explanation:
23000 is the number. You need the decimal to be in between the two whole numbers that aren't 0. 
2.3 <
2.3 x 10, the exponent after the ten has to move the decimal to the original number of spaces in the original number 23000. 
In 23000 its 4 places so your answer would be 
2.3 x 10⁴
 
        
             
        
        
        
The answer for this is hundredth because it is .01 (two values behind decimal means hundredths)