tootie149
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 ?
Delete
Share
This Question is Closed
godorovg
Best Response
You've already chosen the best response.
1
okay i can help you here if you on here?
tootie149
Best Response
You've already chosen the best response.
0
i am here
tootie149
Best Response
You've already chosen the best response.
0
how do I write this
godorovg
Best Response
You've already chosen the best response.
1
show me what you did with this 9(4x-4)=3(12x+7)
tootie149
Best Response
You've already chosen the best response.
0
OK, here we go
godorovg
Best Response
You've already chosen the best response.
1
work with just the nine ony
godorovg
Best Response
You've already chosen the best response.
1
do this only 9(4x-4) I want to see your steps.
tootie149
Best Response
You've already chosen the best response.
0
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
tootie149
Best Response
You've already chosen the best response.
0
my bad i messed up
tootie149
Best Response
You've already chosen the best response.
0
9(4x-4) is
36x-36
godorovg
Best Response
You've already chosen the best response.
1
yes so what is x now?
tootie149
Best Response
You've already chosen the best response.
0
36 ?
godorovg
Best Response
You've already chosen the best response.
1
no .. try again hint we want X alone.
tootie149
Best Response
You've already chosen the best response.
0
there is no x because 36x-36x is nothing
tootie149
Best Response
You've already chosen the best response.
0
lost
tootie149
Best Response
You've already chosen the best response.
0
9*4=36 and
3*12 is 36
godorovg
Best Response
You've already chosen the best response.
1
okay first off there are not two 36x-36x wrong. 9(4x-4) doesn't = 36x-36x no
tootie149
Best Response
You've already chosen the best response.
0
36x-36 ?
godorovg
Best Response
You've already chosen the best response.
1
yes
tootie149
Best Response
You've already chosen the best response.
0
LOL I feel so stupid
godorovg
Best Response
You've already chosen the best response.
1
don't feel that way, sometimes i make little mistakes as well. we all learn in different ways.
tootie149
Best Response
You've already chosen the best response.
0
yes I know I am a visual learner
godorovg
Best Response
You've already chosen the best response.
1
yes that is okay.
tootie149
Best Response
You've already chosen the best response.
0
now for the other side i got 36x+21
godorovg
Best Response
You've already chosen the best response.
1
hey one thing is slow down and do the steps, don't skip ahead just some friendly advice
campbell_st
Best Response
You've already chosen the best response.
0
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
godorovg
Best Response
You've already chosen the best response.
1
yes that is 36x+21 now again how do we get x alone?
tootie149
Best Response
You've already chosen the best response.
0
subtract 36x-36x
campbell_st
Best Response
You've already chosen the best response.
0
its basically saying y = 36x - 36
and y = 36x + 21
the lines are parallel ... so no intersection....
godorovg
Best Response
You've already chosen the best response.
1
campbell yes are right about 36x-36x I wasn't at that point yet..
campbell_st
Best Response
You've already chosen the best response.
0
well tootie has actually has a correct piece of maths above... sorry...
tootie149
Best Response
You've already chosen the best response.
0
so the solution set is empty. right?
godorovg
Best Response
You've already chosen the best response.
1
I was walking through the steps campbell
campbell_st
Best Response
You've already chosen the best response.
0
correct... just practise expanding terms in brackets...
campbell_st
Best Response
You've already chosen the best response.
0
the expansion of the pronumeral was correct... its just the constant term you need to be aware of
tootie149
Best Response
You've already chosen the best response.
0
thank you for taking me through the steps I was not sure if I worked it right Godorovg
godorovg
Best Response
You've already chosen the best response.
1
tootie 149 I was going through the steps with you, and to make sure you understood what was going
k.rajabhishek
Best Response
You've already chosen the best response.
0
empty is the answer
tootie149
Best Response
You've already chosen the best response.
0
Thank you so much I needed to know I worked it right, and you did that thank you again
campbell_st
Best Response
You've already chosen the best response.
0
hope it helps...
godorovg
Best Response
You've already chosen the best response.
1
oh no trouble at all..
tiffanymak1996
Best Response
You've already chosen the best response.
0
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.
godorovg
Best Response
You've already chosen the best response.
1
right back at you I am a fan of yours now too. :)
tootie149
Best Response
You've already chosen the best response.
0
tiffanymak could you give me an example of what you mean when it comes to real numbers
godorovg
Best Response
You've already chosen the best response.
1
real numbers are 1,2,3 ,5 and so on
tootie149
Best Response
You've already chosen the best response.
0
still lost when it comes to real numbers.
tiffanymak1996
Best Response
You've already chosen the best response.
0
real numbers are like all kinds of number, rational, irrational, integer etc. just not complex number.
tiffanymak1996
Best Response
You've already chosen the best response.
0
say: integer: - [infinite], -8, -7, -6,-5...0,1,2,3,4,5....., [infinite]
these are real no.s
tiffanymak1996
Best Response
You've already chosen the best response.
0
sqrt 2, sqrt3, pi etc, are real numbers
tiffanymak1996
Best Response
You've already chosen the best response.
0
yeah, and well that link too.
tiffanymak1996
Best Response
You've already chosen the best response.
0
almost every kind of no.s are real, except for i, (which is sqrt(-1)) the imaginary number
godorovg
Best Response
You've already chosen the best response.
1
Tootie what is the biggest problem in the class you are in??
tootie149
Best Response
You've already chosen the best response.
0
there is so much I do not know where to start
godorovg
Best Response
You've already chosen the best response.
1
okay I am guessing this college algbra right?
tootie149
Best Response
You've already chosen the best response.
0
YOU got it
godorovg
Best Response
You've already chosen the best response.
1
okay first off in this class I can find you videos where can get the basics by watching would that help you?
tootie149
Best Response
You've already chosen the best response.
0
but the said part my daughter was doing this in the 6th grade here, and they make little remarks about it
tootie149
Best Response
You've already chosen the best response.
0
yes that would be great!!!!!!!
godorovg
Best Response
You've already chosen the best response.
1
Tootie here is a shock I taught myself math through videos on the internet.
tootie149
Best Response
You've already chosen the best response.
0
really please give me the links.
tiffanymak1996
Best Response
You've already chosen the best response.
0
a really good site would be the paul's notes
godorovg
Best Response
You've already chosen the best response.
1
okay will back
tootie149
Best Response
You've already chosen the best response.
0
paul's notes
tootie149
Best Response
You've already chosen the best response.
0
I will be waiting Godorovg
campbell_st
Best Response
You've already chosen the best response.
0
tootie... have a look at Khan academy on youtube..or google Khan Academy... they have lots of videos explaining concepts
tootie149
Best Response
You've already chosen the best response.
0
never heard of them
tiffanymak1996
Best Response
You've already chosen the best response.
0
MIT has free online courses for tons of subject, i don't know about algebra but you can check out their site.
tootie149
Best Response
You've already chosen the best response.
0
just looked it up thanks so much campbell_st
tootie149
Best Response
You've already chosen the best response.
0
the MIT?
tiffanymak1996
Best Response
You've already chosen the best response.
0
yeah
tootie149
Best Response
You've already chosen the best response.
0
ok will look it up thanks so much, so much
tiffanymak1996
Best Response
You've already chosen the best response.
0
that's the link
tootie149
Best Response
You've already chosen the best response.
0
looking now will come back after i look at it
godorovg
Best Response
You've already chosen the best response.
1
tootie it is the first part of this class
tootie149
Best Response
You've already chosen the best response.
0
thanks to everyone for their help. really thanks
tootie149
Best Response
You've already chosen the best response.
0
Ok
godorovg
Best Response
You've already chosen the best response.
1
Always glad to help out :)
tiffanymak1996
Best Response
You've already chosen the best response.
0
so, do you home study math?
godorovg
Best Response
You've already chosen the best response.
1
yes and I am working on Physics and chem through MIT open course study right now. Plus Calc 1 and Cal2 as well
tiffanymak1996
Best Response
You've already chosen the best response.
0
cool, i study through stanford.
godorovg
Best Response
You've already chosen the best response.
1
I wish I could get in there.
godorovg
Best Response
You've already chosen the best response.
1
can't now because I ran away to college when I wasn't ready GPA way too low.
tiffanymak1996
Best Response
You've already chosen the best response.
0
me too, i'm only joining their for gifted child program, but still has two years to go till college.
godorovg
Best Response
You've already chosen the best response.
1
yeah, funny thing is I didn't how I was gifted math either.
tiffanymak1996
Best Response
You've already chosen the best response.
0
what's the difference between college and university?
godorovg
Best Response
You've already chosen the best response.
1
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.
godorovg
Best Response
You've already chosen the best response.
1
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?
godorovg
Best Response
You've already chosen the best response.
1
also, depending on your major you could go on-line and get your degree.
tiffanymak1996
Best Response
You've already chosen the best response.
0
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
godorovg
Best Response
You've already chosen the best response.
1
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
Best Response
You've already chosen the best response.
0
i'll be so old by then :)
godorovg
Best Response
You've already chosen the best response.
1
nah you are still pretty young I am guessing
tiffanymak1996
Best Response
You've already chosen the best response.
0
nah, just old for starting to work
godorovg
Best Response
You've already chosen the best response.
1
yeah it happens no big deal. I think most jobs want older people now a days
godorovg
Best Response
You've already chosen the best response.
1
hey tootie what you think about the video?
tootie149
Best Response
You've already chosen the best response.
0
Loved it godorvg and all of the other sites as well
godorovg
Best Response
You've already chosen the best response.
1
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
godorovg
Best Response
You've already chosen the best response.
1
Tootie when watching these videos please take notes, it only helps you to learn the what is being taught.
tootie149
Best Response
You've already chosen the best response.
0
Thank you I had no one until I found this site. I thank God for it and all of you
godorovg
Best Response
You've already chosen the best response.
1
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
godorovg
Best Response
You've already chosen the best response.
1
Tiffany it is almost one in the morning here, must get some sleep talk with you latter.
tootie149
Best Response
You've already chosen the best response.
0
good night godorovg
tootie149
Best Response
You've already chosen the best response.
0
hay tiffanymak I have a word problem up can you take a look at it for me? please
tiffanymak1996
Best Response
You've already chosen the best response.
0
yeah, feel free to ask