anonymous
  • anonymous
9(4x-4)=3(12x+7) when I worked t out i got just 57 no x my choices are all real numbers or set is empty which is it ?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
okay i can help you here if you on here?
anonymous
  • anonymous
i am here
anonymous
  • anonymous
how do I write this

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anonymous
  • anonymous
show me what you did with this 9(4x-4)=3(12x+7)
anonymous
  • anonymous
OK, here we go
anonymous
  • anonymous
work with just the nine ony
anonymous
  • anonymous
do this only 9(4x-4) I want to see your steps.
anonymous
  • anonymous
9(4x-4)=3(12x+7) 36x-4=36x+7 36x-4+4=36x+7+4 36x-36x=11 ok here is where I get lost because there is no x so is the answer real or empty
anonymous
  • anonymous
my bad i messed up
anonymous
  • anonymous
9(4x-4) is 36x-36
anonymous
  • anonymous
yes so what is x now?
anonymous
  • anonymous
36 ?
anonymous
  • anonymous
no .. try again hint we want X alone.
anonymous
  • anonymous
there is no x because 36x-36x is nothing
anonymous
  • anonymous
lost
anonymous
  • anonymous
9*4=36 and 3*12 is 36
anonymous
  • anonymous
okay first off there are not two 36x-36x wrong. 9(4x-4) doesn't = 36x-36x no
anonymous
  • anonymous
36x-36 ?
anonymous
  • anonymous
yes
anonymous
  • anonymous
LOL I feel so stupid
anonymous
  • anonymous
don't feel that way, sometimes i make little mistakes as well. we all learn in different ways.
anonymous
  • anonymous
yes I know I am a visual learner
anonymous
  • anonymous
yes that is okay.
anonymous
  • anonymous
now for the other side i got 36x+21
anonymous
  • anonymous
hey one thing is slow down and do the steps, don't skip ahead just some friendly advice
campbell_st
  • campbell_st
tootie you are correct with your solution the expansion is 36x - 36 = 36x + 21 subtract 36x from both sides and you get -36 = 21 no solution
anonymous
  • anonymous
yes that is 36x+21 now again how do we get x alone?
anonymous
  • anonymous
subtract 36x-36x
campbell_st
  • campbell_st
its basically saying y = 36x - 36 and y = 36x + 21 the lines are parallel ... so no intersection....
anonymous
  • anonymous
campbell yes are right about 36x-36x I wasn't at that point yet..
campbell_st
  • campbell_st
well tootie has actually has a correct piece of maths above... sorry...
anonymous
  • anonymous
so the solution set is empty. right?
anonymous
  • anonymous
I was walking through the steps campbell
campbell_st
  • campbell_st
correct... just practise expanding terms in brackets...
campbell_st
  • campbell_st
the expansion of the pronumeral was correct... its just the constant term you need to be aware of
anonymous
  • anonymous
thank you for taking me through the steps I was not sure if I worked it right Godorovg
anonymous
  • anonymous
tootie 149 I was going through the steps with you, and to make sure you understood what was going
anonymous
  • anonymous
empty is the answer
anonymous
  • anonymous
Thank you so much I needed to know I worked it right, and you did that thank you again
campbell_st
  • campbell_st
hope it helps...
anonymous
  • anonymous
oh no trouble at all..
tiffanymak1996
  • tiffanymak1996
in this case if there is no x, then the set is empty, if it's all real number, all real number would work with the equation.
anonymous
  • anonymous
right back at you I am a fan of yours now too. :)
anonymous
  • anonymous
tiffanymak could you give me an example of what you mean when it comes to real numbers
anonymous
  • anonymous
real numbers are 1,2,3 ,5 and so on
anonymous
  • anonymous
still lost when it comes to real numbers.
tiffanymak1996
  • tiffanymak1996
real numbers are like all kinds of number, rational, irrational, integer etc. just not complex number.
tiffanymak1996
  • tiffanymak1996
say: integer: - [infinite], -8, -7, -6,-5...0,1,2,3,4,5....., [infinite] these are real no.s
anonymous
  • anonymous
hey tootie look at this http://math10.edcentre.ca/bridgemath/numbers/setnos.php
tiffanymak1996
  • tiffanymak1996
sqrt 2, sqrt3, pi etc, are real numbers
tiffanymak1996
  • tiffanymak1996
yeah, and well that link too.
tiffanymak1996
  • tiffanymak1996
almost every kind of no.s are real, except for i, (which is sqrt(-1)) the imaginary number
anonymous
  • anonymous
Tootie what is the biggest problem in the class you are in??
anonymous
  • anonymous
there is so much I do not know where to start
anonymous
  • anonymous
okay I am guessing this college algbra right?
anonymous
  • anonymous
YOU got it
anonymous
  • anonymous
okay first off in this class I can find you videos where can get the basics by watching would that help you?
anonymous
  • anonymous
but the said part my daughter was doing this in the 6th grade here, and they make little remarks about it
anonymous
  • anonymous
yes that would be great!!!!!!!
anonymous
  • anonymous
Tootie here is a shock I taught myself math through videos on the internet.
anonymous
  • anonymous
really please give me the links.
tiffanymak1996
  • tiffanymak1996
a really good site would be the paul's notes
anonymous
  • anonymous
okay will back
anonymous
  • anonymous
paul's notes
anonymous
  • anonymous
I will be waiting Godorovg
campbell_st
  • campbell_st
tootie... have a look at Khan academy on youtube..or google Khan Academy... they have lots of videos explaining concepts
anonymous
  • anonymous
never heard of them
tiffanymak1996
  • tiffanymak1996
MIT has free online courses for tons of subject, i don't know about algebra but you can check out their site.
anonymous
  • anonymous
just looked it up thanks so much campbell_st
anonymous
  • anonymous
the MIT?
tiffanymak1996
  • tiffanymak1996
yeah
anonymous
  • anonymous
ok will look it up thanks so much, so much
anonymous
  • anonymous
tootie watch this video http://www.youtube.com/watch?v=1Amt_-uB9QQ
tiffanymak1996
  • tiffanymak1996
http://ocw.mit.edu/courses/
tiffanymak1996
  • tiffanymak1996
that's the link
anonymous
  • anonymous
looking now will come back after i look at it
anonymous
  • anonymous
tootie it is the first part of this class
anonymous
  • anonymous
thanks to everyone for their help. really thanks
anonymous
  • anonymous
Ok
anonymous
  • anonymous
Always glad to help out :)
tiffanymak1996
  • tiffanymak1996
so, do you home study math?
anonymous
  • anonymous
yes and I am working on Physics and chem through MIT open course study right now. Plus Calc 1 and Cal2 as well
tiffanymak1996
  • tiffanymak1996
cool, i study through stanford.
anonymous
  • anonymous
I wish I could get in there.
anonymous
  • anonymous
can't now because I ran away to college when I wasn't ready GPA way too low.
tiffanymak1996
  • tiffanymak1996
me too, i'm only joining their for gifted child program, but still has two years to go till college.
anonymous
  • anonymous
yeah, funny thing is I didn't how I was gifted math either.
tiffanymak1996
  • tiffanymak1996
what's the difference between college and university?
anonymous
  • anonymous
Tiffany when I first took I couldn't get it and than day by day it started to make sense until now here I am.
anonymous
  • anonymous
nothing really expect for name . Now there two year and four colleges and University out there. It all depends on what you want to do in college?
anonymous
  • anonymous
also, depending on your major you could go on-line and get your degree.
tiffanymak1996
  • tiffanymak1996
i can't decide yet, math and literature is my life, but my parents wants me to be a lawyer, just to make sure i'll have enough to live by
anonymous
  • anonymous
Lawyers would be okay, only thing is you go to school for eight to nine years than have to past a test to become a lawyer.
tiffanymak1996
  • tiffanymak1996
i'll be so old by then :)
anonymous
  • anonymous
nah you are still pretty young I am guessing
tiffanymak1996
  • tiffanymak1996
nah, just old for starting to work
anonymous
  • anonymous
yeah it happens no big deal. I think most jobs want older people now a days
anonymous
  • anonymous
hey tootie what you think about the video?
anonymous
  • anonymous
Loved it godorvg and all of the other sites as well
anonymous
  • anonymous
Tootie I know in you can do this math, relax and take your time with things. Also, don;t be afraid to ask for help if you need it. There is nothing wrong in asking a questions
anonymous
  • anonymous
Tootie when watching these videos please take notes, it only helps you to learn the what is being taught.
anonymous
  • anonymous
Thank you I had no one until I found this site. I thank God for it and all of you
anonymous
  • anonymous
hey we are here to help you out. Please don't be afraid to send me a message and ask for help and you too Tiffany
anonymous
  • anonymous
Tiffany it is almost one in the morning here, must get some sleep talk with you latter.
anonymous
  • anonymous
good night godorovg
anonymous
  • anonymous
hay tiffanymak I have a word problem up can you take a look at it for me? please
tiffanymak1996
  • tiffanymak1996
yeah, feel free to ask

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