It's rational
Rational numbers are numbers that you can put into the form of a/b.
 
        
             
        
        
        
Answer:
a = 170
Step-by-step explanation:
0.3a = 51
a = 51 : 0.3
a = 51 : 3/10
a = 51 x 10/3
a = 510/3
a = 170
0.3x170 = 
= 3/10x170
= 510/10
= 51
 
        
                    
             
        
        
        
The answer is $1.28 sale tax
Step-by-step explanation:
Multiply the cost of the item times 0.05 to get the amount of the sales tax:
25.60 * 0.05 = $1.28 sales tax
        
                    
             
        
        
        
Answer:
shoulda woulda coulda been B
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
A. 15, 20, and 25
Step-by-step explanation:
Note that 3-4-5 is a pythagorean triple via following:

Dividing 15, 20, and 25 by 5 nets you the pythagorean triple 3-4-5.