To expand, you just take the 5 and multiple by each individual factor.
10 x 5x + 5y x 10
        
                    
             
        
        
        
Answer:
3 miles per hour
Step-by-step explanation:
We need to subtract the two numbers to find the difference in speeds
4/5 - 3/4
We need to get a common denominator of 20
4/5 *4/4 - 3/4 *5/5
16/20 - 15/20
1/20  
The car going 4/5 miles per minute is going 1/20 miles per minute faster than the car going 3/4 miles per minute.
The question asks for miles per hour, not miles per minute.  We know  that there are 60 minutes per hour.
1/20 miles per minute * 60 minutes / hour 
60/20 miles/hour 
3 miles/ hour
The car going 4/5 miles per minute is going 3 miles per hour faster than the car going 3/4 miles per minute.
 
        
             
        
        
        
Answer:
Express 5 72 in simplest radical form:
Factorize the 72 in your expression:  
5√72 = 5√(2*2*2*3*3)
take a pair of two's and a pair of three's out of the radical sign:
5√72 = 5*2*3√2 = 30√2
this is the simplest radical form
Step-by-step explanation:
 
        
                    
             
        
        
        
Assuming that all tiles must stay whole it would be:
1×54
2×27
3×18
6×9