Question

13. Find the other rational number, if one rational number is p/q and the product of the two rationalnumbers is r/s
(a) p/q=3/7r/s= 9/28
(b)p/q=-7/4,r/s=-14/9 ​

Answer 1

Answer:

✔✔✔✔

Step-by-step explanation:

How do you prove that the product of two rational numbers are rational?

"The product of two rational numbers is rational."

So, multiplying two rationals is the same as multiplying two such fractions, which will result in another fraction of this same form since integers are closed under multiplication. Thus, multiplying two rational numbers produces anotherrational number.

What is the product of an irrational and rational number?

The product of any rational number and any irrational number will always be anirrational number.

Answer 2

let the rational number be x .

9 / 8 x = 3 / 7

x = 3 / 7 * 9 / 8

x = 3 / 7 × 28 / 9

4 / 3 = 3 / 4 answer