sabrinablacks0 sabrinablacks0

13-10-2018
Mathematics

contestada

On a number line, the distance from zero to -7 is 7 units.

Which equation demonstrates this concept?
A.
|-7| = 7
B.
|-7| = -7
C.
72 = 49
D.
0 + 7 = 7

Respuesta :

Professor1994 Professor1994

13-10-2018

Answer: Option A. |-7| = 7

Solution:

The distance is a positive value, then we must not take in account the sign, and using:

|a| =-a if a<0

with a=-7

|-7| = -(-7)

|-7| = 7

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