If a and - a are numbers on the number line, which expression MUST give the distance between them? A) 0 B) a Eliminate C) |2a| D) |a|

Question

Mathematics

Bailey Dyer

15 March, 01:39

If a and - a are numbers on the number line, which expression MUST give the distance between them? A) 0 B) a Eliminate C) |2a| D) |a|

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Answers (2)

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Lillian Koch · Answer 1

If a and - a are numbers on the number line, expression/letter C, |2a| gives the distance between them.

For example, a = 1; - a = - 1

1 and - 1's distance is not 0. (A) It is certainly not (B) and (D) or 1, leaving (C) or |2 * 1 | = 2.

-1 + 2 = 1

Hailie Spence · Answer 2

The answer would be c because the absolute value of both numbers would be the distance between them