Answer:
x=10, y=-3
Step-by-step explanation:
solve by addition/elimination
 
        
             
        
        
        
Answer:
 It took 5 hours
Step-by-step explanation:
Because 28 times 5 is 140 plus 25 for the call is 165.
 
        
             
        
        
        
Answer:
r - 5 = 2c
r = 75
Step-by-step explanation:
To write an equation for the problem, we first need do declare the value of the number of apps cora has.
Let c = Cora's apps
r - 5 = 2c
r - 5 is used to indicate that Rita deleted 5 apps.
2c is used to represent the twice the number of apps Cora has.
Now you said that Cora had 35 apps.
Let's plug that into the equation.
r - 5 = 2c
r - 5 = 2(35)
r - 5 = 70
Now we transpose the -5 to the other side to leave r.
r = 70 + 5
r = 75
So if Cora has 35 apps, then Rita will have 75 apps. 
 
        
             
        
        
        
77 is the median score for rhis propblem
        
                    
             
        
        
        
Answer:
4 to the -2 power divided by 4 to the 4th power

<h3>(1/4096) is the right answer.</h3>