Mathematics
14 Online
OpenStudy (anonymous):
|3x + 12| = 18 SOLVE
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OpenStudy (here_to_help15):
What times 3 can equal 18 ?
OpenStudy (anonymous):
6
OpenStudy (here_to_help15):
Correct so x=6
OpenStudy (here_to_help15):
Wait wait wait
OpenStudy (anonymous):
Thats not even close to one of the options
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OpenStudy (here_to_help15):
I made a huge mistake lol
OpenStudy (rock_mit182):
what are you talking about
OpenStudy (rock_mit182):
you have to solve this :
3x + 12 = 18 and 3x + 12 =-18
OpenStudy (rock_mit182):
because is an absolute value
OpenStudy (anonymous):
2 is one of them right
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OpenStudy (rock_mit182):
now solve the second equation
OpenStudy (anonymous):
-10
OpenStudy (here_to_help15):
Ok so I'll break it down
3x+12= 18
-12 -12
--------------
3x=6
\[\frac{ 6 }{ 3 } =?\]
OpenStudy (rock_mit182):
now you're right, that means how far are you from certain point
OpenStudy (here_to_help15):
This is an equation @rock_mit182 the left side is suppose to equal the right side....
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OpenStudy (rock_mit182):
and you figure this out by taking what is inside | | = a and what is inside of | | = -a
OpenStudy (rock_mit182):
@Here_to_help15 here we are talking about
absolute valu functions
OpenStudy (rock_mit182):
if we have |x| = 3
OpenStudy (rock_mit182):
that means how far you're from zero
OpenStudy (here_to_help15):
x does not equal 3!
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OpenStudy (rock_mit182):
which could be -3 or 3 units
OpenStudy (rock_mit182):
Im not talking about the last example
OpenStudy (rock_mit182):
by the way, Im just explaining to you what means an absolute value
OpenStudy (here_to_help15):
We are both correct....
OpenStudy (here_to_help15):
x=2 or -10
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OpenStudy (rock_mit182):
of course we do.. exactly
OpenStudy (rock_mit182):
(y)
OpenStudy (here_to_help15):
So @brooke_ivy99 which answer choice do you have?