197k views
4 votes
Craig uses a ruler to determine the length of two pieces of metal. He records the length of each piece of metal as a rational number. Which statement best explains whether the sum of the two lengths Craig recorded must also be a rational number?

A. When adding two rational numbers a/b and c/d, the numerators a and c do not have to be integers. Therefore, the sum does not have to be a rational number.

B.When adding two rational numbers a/b and c/d, the common denominator bd does not have to be an interger. Therefore, the sum does not have to be a rational number.

C. When adding two rational numbers a/b and c/d, the sum is ac/bd, and both the numerator and denominator are integers. Therefore, the sum must be a rational number.

D. When adding two rational numbers a/b and c/d, the sum is ad+bc/bd, and both the numerator and denominator are integers. Therefore, the sum must be a rational number.

2 Answers

2 votes

Answer:

The correct answer is ---> When adding two rational numbers (a/b) and (c /d), the sum is (ac)/( bd), and both the numerator and denominator are integers. Therefore, the sum must be a rational number. My teacher checked

Explanation:

User David Dury
by
8.2k points
6 votes
A. When adding two rational numbers a/b and c/d, the numerators a and c do not have to be integers. Therefore, the sum does not have to be a rational number. I think this is right might nor be :/
User Jay Gray
by
7.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories