briannalane120 briannalane120

28-04-2017
Mathematics

contestada

An inequality is shown below.

|3x+9|≥36

Which values of x makes the expression true.

a) x≤−15 or x≥9

b) x≥−15 or x≤9

c) x≥−9 or x≤15

d) x≤−9 or x≥15

Respuesta :

rcukierkorn rcukierkorn

28-04-2017

You need to break this up into 3x+9≥27 to get x≥9 and 3x+9≤-36 to get x≤-15.
The correct answer would be a

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