ramirokool
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}



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TuringTest
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what foes absolute value mean @ramirokool ?

TuringTest
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*does

TuringTest
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if we had
x=2
what could x possibly be?

ramirokool
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The magnitude of a real number without regard to its sign.

TuringTest
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right, so x=2 means x could be what two numbers?

ramirokool
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a 4 and a 0.8 ? their should be a negative.

ramirokool
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I got C on my sheet.

ramirokool
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You divide.

TuringTest
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x=2 means that we ignore the sign of x  that is all

TuringTest
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4=4
that's not 2, so no

TuringTest
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0.8=0.8
also not 2, so not correct

ramirokool
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Go step by step.

TuringTest
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I am, are you lost in what i just said?

ramirokool
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Nope.

hba
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@TuringTest Dude he just needs the answer :D

TuringTest
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@hba do not assume that, he's working with me right now

TuringTest
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ok, so considering things like that 6=6, and 0.88=0.88
what could x=2 possibly be?

ramirokool
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2

TuringTest
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or...?

ramirokool
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no or.

TuringTest
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yes or, what is 2 ?

ramirokool
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but if it in the box would it be postive?

TuringTest
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yes, so 2=?

ramirokool
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2 ?

TuringTest
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right, so x=2 means x could be what TWO numbers?

hba
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Any thing which comes between   < this becomes positive :)

ramirokool
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2 and 2

TuringTest
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correct :)

TuringTest
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so for x=y that means either x=y or x=y

ramirokool
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x =y

TuringTest
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so you problem is
5x – 8 > 12
based on what we just discussed, 5x  8>12 means that 12> what two expressions?

TuringTest
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rather, 5x8 could be what two numbers?

ramirokool
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I still think it C cause that what I got, 0.8 and 4.

TuringTest
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it's not C

TuringTest
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a=b implies that either a=b or a=b

ramirokool
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My mistake D.

TuringTest
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yes :)