Answer:
I think the answer is 47
Step-by-step explanation:
 
        
             
        
        
        
Rate of change=(changespeed)/(changetime)=(s1-s2)/(t1-t2)
change is (0-60)/(0-5)=-60/-6=12
answer is 12 units per second
        
             
        
        
        
Subtract 9x from 23x yields 14x. This was done by subtracting algebraically the variables.
        
                    
             
        
        
        
The two cities are actually 427.5 miles apart.
        
             
        
        
        
Answer:
(x,-y): (2,-2)
Step-by-step explanation:
M=(x+x)/2,(y+y)/2
Given (1,4)=

This implies:


In a similar way,

The question demanded (x,-y)
Hence(2,-2) is the answer