Use Absolute Value to Express Distance
-72 and $- 9$
A) $| 72 - ( - 9 ) | = 81$
B) $| ( - 9 ) - 72 | = - 81$
C) $| 72 + ( - 9 ) | = 63$
D) $| - 72 + ( - 9 ) | = - 63$

Question

Quizplus · Accepted Answer

A) The absolute value of a difference between two numbers represents the distance between them on the number line, regardless of the order. $| 72 - ( - 9 ) | = | 72 + 9 | = 81$, correctly represents the distance between 72 and -9. Choices B, C, and D either do not use absolute value correctly or result in negative distances, which is not possible.

Use Absolute Value to Express Distance -72 And −9- 9−9 A) ∣72−(−9)∣=81| 72 - ( - 9 ) | = 81∣72−(−9)∣=81

Use Absolute Value to Express Distance
-72 And $- 9$ A) $| 72 - ( - 9 ) | = 81$