Answer:
5/16m long.
Step-by-step explanation:
- 5/8  ÷  2/1
- 5/8  ×  1/2
-     =5/16m long.
 
        
                    
             
        
        
        
First combine like terms (-9n-3n=-12n)
Then, subtract 6n on both sides (to get rid of the 6n) = -18n
Then, add 8 to both sides (does not matter) = 0
Finally divide (answer is 0)
        
             
        
        
        
Answer:
Square 
Step-by-step explanation:
From what it looks like I think it is a square
 
        
                    
             
        
        
        
Answer:
D(- 1) = 2
Step-by-step explanation:
To evaluate D(- 1), substitute x = - 1 into D(x) , that is
D(- 1) = (- 1)² - 2(- 1) - 1 = 1 + 2 - 1 = 2
 
        
                    
             
        
        
        

Step-by-step explanation:
The amount of time from 10pm to 7am is 9 hours. However, the time indicated is 7:10am. Since there are 60 minutes in an hour, 10 min is equal to 1/6 of an hour. Therefore, the total time that the water level of the pool decreased is  hours or
 hours or  hours. To find the rate at which the water level decreased, we divide the change in the water (in inches) by the time it took to reach that level. So we write
 hours. To find the rate at which the water level decreased, we divide the change in the water (in inches) by the time it took to reach that level. So we write 
rate of change 


