Explanation:
To write each of the given numbers as a rational number with a numerator and a denominator, we'll pair them up accordingly:
(i) Denominator 10: This can be written as the rational number -72/10. To simplify it further, you can divide both the numerator and denominator by their greatest common divisor (which is 2 in this case) to get -36/5.
(ii) Numerator -72: If we want to express -72 as a rational number, we can simply put it over 1, like this: -72/1.
(iii) Denominator -18: To write this as a rational number, we can put it over 1 as well: -18/1, which simplifies to -18.
(iv) Numerator -36: Similar to the second case, we can express -36 as a rational number by putting it over 1: -36/1.
So, here are the rational numbers with the requested numerators and denominators:
(i) -36/5
(ii) -72/1 or simply -72
(iii) -18/1 or simply -18
(iv) -36/1 or simply -36