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Solve |5x – 8| > 12. Answer {x| -0.8 < x < 4} {x| -4 < x < 4} {x| x > 4 or x < -0.8} {x| x < -4 or x > 0.8}

Mathematics
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what foes absolute value mean @ramirokool ?
*does
if we had |x|=2 what could x possibly be?

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Other answers:

The magnitude of a real number without regard to its sign.
right, so |x|=2 means x could be what two numbers?
a 4 and a 0.8 ? their should be a negative.
I got C on my sheet.
You divide.
|x|=2 means that we ignore the sign of x - that is all
|4|=4 that's not 2, so no
|0.8|=0.8 also not 2, so not correct
Go step by step.
I am, are you lost in what i just said?
Nope.
  • hba
@TuringTest Dude he just needs the answer :D
@hba do not assume that, he's working with me right now
ok, so considering things like that |-6|=6, and |0.88|=0.88 what could |x|=2 possibly be?
2
or...?
no or.
yes or, what is |-2| ?
but if it in the box would it be postive?
yes, so |-2|=?
2 ?
right, so |x|=2 means x could be what TWO numbers?
  • hba
Any thing which comes between | | < this becomes positive :)
-2 and 2
correct :)
so for |x|=y that means either x=y or -x=y
-x =y
so you problem is |5x – 8| > 12 based on what we just discussed, |5x - 8|>12 means that 12> what two expressions?
rather, 5x-8 could be what two numbers?
I still think it C cause that what I got, 0.8 and 4.
it's not C
|a|=b implies that either a=b or a=-b
My mistake D.
yes :)

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