Yes, because 7+5 = 12 which is a rational number
No, it is not.
7 plus the square root of 5 is an irrational number because the square root of 5 is a never ending decimal number that can't be expressed as a fraction.
is 5 over 7 a rational number
Rational
5/4x+7/12x is the same as 15/12x+7/12x = 21/12x
Yes, -5/7 is a rational number because it can be expressed as a fraction.
If you put the numbers in order it is: 0, 0, 1, 2, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 7, 7, 7, 7, 8, 9. Since there are 25 numbers, we are looking for the thirteenth number, which is 5.
1). Any number that you can write down completely, using digits, decimal point, and fraction bar, is a rational number. So yes, 5/7 is rational. 2). Any number that can be written as the ratio of two whole numbers is rational. 5/7 is the ratio of 5 to 7. So yes, it is rational.
Yes
No because 2+7 = 9 which is a rational number
0.7143
7 + 5 + 4 + 5 + 3 + 4 + 6 + 5 + 4 + 5 + 6 + 4 + 7 = 65