The product of two rational numbers is always rational because (ac/bd) is the ratio of two integers, making it a rational number.
We need to prove that the product of two rational numbers is always rational. A rational number is a number that can be stated as the quotient or fraction of two integers : a numerator and a non-zero denominator.
Let us consider two rational numbers, a/b and c/d. The variables "a", "b", "c", and "d" all represent integers. The denominators "b" and "d" are non-zero. Let the product of these two rational numbers be represented by "P".
P = (a/b)×(c/d)
P = (a×c)/(b×d)
The numerator is again an integer. The denominator is also a non-zero integer. Hence, the product is a rational number.
learn more about of rational numbers here
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A, C, and D are all correct answers, since you are taking away 4 in each of the answers. Hope this helped!
        
             
        
        
        
For this case we have a square whose sides are known and equal to 60 ft.
 We want to find the diagonal of the square.
 For this, we use the Pythagorean theorem.
 We have then: 
 Answer:
 Answer:
 from home to second base it is about:
 
 
        
        
        
Answer:
C is correct.
Step-by-step explanation:
Khan Academy said so.
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
solution is (4,3)
OR 
x=4
y=3
this point lies in both the tables.
we have to find a pair which lies on both.