Mathematics
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OpenStudy (anonymous):
2x - 9/10 <= -7 or 2x - 9/10 >= 4
What is the solution of the compound inequality?
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OpenStudy (saifoo.khan):
did u gave it a try?
OpenStudy (anonymous):
I did...but I am just horrible at fractions. I am lost.
OpenStudy (anonymous):
No way I will get this one. I have a headache already. LOL
OpenStudy (anonymous):
I know it is {x|x <= ?? OR x >= ??}
OpenStudy (saifoo.khan):
alright, let me solve!
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OpenStudy (anonymous):
:)
OpenStudy (anonymous):
ew nasty quadratic.
OpenStudy (saifoo.khan):
umm, no not quadratic my friend.
OpenStudy (anonymous):
>.> how are you solving this?
OpenStudy (saifoo.khan):
this will be solved separately.
2x - 9/10 <= -7 & 2x - 9/10 >= 4
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OpenStudy (saifoo.khan):
\[\Huge {x|x \le -\frac{61}{11} or x \ge \frac{23}{9} }\]
OpenStudy (anonymous):
what is that notation called again?
OpenStudy (saifoo.khan):
interval notation.
OpenStudy (anonymous):
ah yes.
OpenStudy (anonymous):
How come I got -61/20?
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OpenStudy (anonymous):
not correct. Its says to carefully check over the work tht you did to solve each inequality.
OpenStudy (saifoo.khan):
oh, thts a typo...
mybrains is right.
OpenStudy (anonymous):
;)
OpenStudy (saifoo.khan):
i hate when my calc does that! :@
OpenStudy (saifoo.khan):
whts your name mybrain?
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OpenStudy (anonymous):
Alan
OpenStudy (saifoo.khan):
Al-an?
OpenStudy (anonymous):
my nickname refers to my constant struggle with my brain haha
OpenStudy (saifoo.khan):
lol, jk.
OpenStudy (saifoo.khan):
haha!
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OpenStudy (anonymous):
I tried -61/20 or 23/9 and it is not correct.
OpenStudy (anonymous):
how are you checking it dumbbunny?
OpenStudy (saifoo.khan):
dang it.
OpenStudy (saifoo.khan):
the second one is: 49/20
OpenStudy (anonymous):
Well, I am not. Fractions give me fits. I just put in the two answers you guys came up with and it says "Sorry that is not correct."
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OpenStudy (saifoo.khan):
still? >.< :(
OpenStudy (anonymous):
so I got -61/20 or 49/20. Those are the solutions but you should also be saying x <= -61/20 or x>= 49/20
OpenStudy (anonymous):
You don't need to be good with fractions. Believe me I still can't add them on paper, just put them in your calculator.
OpenStudy (saifoo.khan):
hmm. right^
OpenStudy (anonymous):
LOL, well you were both close...the correct answer is -61/2 and 49/2 but you both tried very hard and I appreciate that.
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OpenStudy (anonymous):
LOL what. I feel cheated, how could it be just 2?? did you write the probelm down wrong :P?
OpenStudy (anonymous):
No, I triple checked it.
OpenStudy (saifoo.khan):
i think so..
OpenStudy (anonymous):
I gave you a medal anyway.
OpenStudy (anonymous):
:]
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OpenStudy (saifoo.khan):
hehe, thnks!