anonymous
  • anonymous
Can someone check my work plz? 2/3n=8 n=____ I get 9 Is that right? IS the correct answer n=12???
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
how did u get that ?
anonymous
  • anonymous
tbh I took 2/3 and multiplied to get a whole # 2/383=6/3 which is the whole #2
anonymous
  • anonymous
hold on ...think I goofed on it

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anonymous
  • anonymous
waiiit a min i am confused see the easiest method
anonymous
  • anonymous
so frustrated.... now i can not duplicate the problem... ugh
anonymous
  • anonymous
2 = 3n* 8 do it like this
anonymous
  • anonymous
2 = 24n
anonymous
  • anonymous
so n 2/24
anonymous
  • anonymous
n = 1 /12
anonymous
  • anonymous
i understand the problem as 2/3 multiplied by N gives you the answer of 8 therefor 2/3 goes into 8 ____ times the ____ being what N= right?
anonymous
  • anonymous
nooo dont confuse it take it simpleeee
anonymous
  • anonymous
2/3n = 8\[\frac{ 2 }{ 3n } =8\]
anonymous
  • anonymous
therefore 2 = 3n * 8
anonymous
  • anonymous
2 = 24n
anonymous
  • anonymous
24n = 2
anonymous
  • anonymous
n = 2/24
anonymous
  • anonymous
n = 1 /12
anonymous
  • anonymous
thats it
anonymous
  • anonymous
i just got n=12 using the http://www.tiger-algebra.com/drill/2/3n=8/
anonymous
  • anonymous
Is it 2/3n or (2/3)*n?
anonymous
  • anonymous
no its -8 and in ur equation it is =8
anonymous
  • anonymous
it says solve. 2over 3n=8 n=___ so 2/3n=8 n=__
anonymous
  • anonymous
So then Smitha is right
anonymous
  • anonymous
idk.... I went to http://www.tiger-algebra.com/ and used their system and it says only one answer can be found and that is n=12. looking at how it is worked out it appears to be correct but now i am second guessing things. I only have one try with this test so I can not afford to fail it :/
anonymous
  • anonymous
If I could suggest something real quick, your equation is 2/3n = 8. If you have a calculator on you you could find that 2/3 is .6 (repeated). So .6n(repeated) = 8. Then you have to divide the .6n (repeated) by .6 to get "n" by itself. And the 8 by the .6 as well. The answer I got was 12. Sorry if this didn't help.
anonymous
  • anonymous
Thank you. It helps and that is the same principle steps I was doing
anonymous
  • anonymous
Ok, and no problem :D This used to be my favorite type of math.
anonymous
  • anonymous
can you maybe help me with a few more , if you have time?
anonymous
  • anonymous
Sure. Just give me a minute or two with my responses :P
anonymous
  • anonymous
after an hour and a half i am only on #5...lol...
anonymous
  • anonymous
There is a difference between 2/3n and and (2/3)*n
anonymous
  • anonymous
|dw:1432914834349:dw|
anonymous
  • anonymous
Yes. I believe it is the second one, just wrote out differently.
anonymous
  • anonymous
You clearly have misinterpreted the question
anonymous
  • anonymous
@LiamR Doesn't 2 over 3n mean the first one
anonymous
  • anonymous
Based off of what @TTinSC said I inferred it was the second.
anonymous
  • anonymous
@TTinSC how was it written on your test.
anonymous
  • anonymous
If it is really 2 over 3n then @abdul_shabeer is absolutely right.
anonymous
  • anonymous
|dw:1432915004134:dw| solve for n
anonymous
  • anonymous
@abdul_shabeer ^
anonymous
  • anonymous
@LiamR is right, then
anonymous
  • anonymous
http://www.tiger-algebra.com/drill/2/3n=8/ this is the site i use to answer this maybe you can go there and see if it is correct... so confused now:[
anonymous
  • anonymous
You had a very good point @abdul_shabeer , TTinSC make sure you pay attention to the equation setup in-case you have these in the future.
anonymous
  • anonymous
When written like that @TTinSC answer 12 is correct.
anonymous
  • anonymous
that is the actual page i entered the problem on
anonymous
  • anonymous
ok... here comes the next one
anonymous
  • anonymous
|dw:1432915347174:dw|
anonymous
  • anonymous
so that would be 7z-1 divided by2=3z-2....correct?
anonymous
  • anonymous
Yes. I believe so. Any idea on how to get started? If not let me know.
anonymous
  • anonymous
brain dead atm ...lol...trying to remember the steps
anonymous
  • anonymous
Ok. So what you want to try and work towards is getting "z" to be alone on one side. Before you can do that though, you have to get rid of the 2 in the denominator on the left side of the equation. Do you know how to do that?
anonymous
  • anonymous
If not that's ok
anonymous
  • anonymous
so it should be 7z=7z/1=7z*2 /2 or to state it 7zequals 7z over1( or divided by1) equals 7z multiplied by2 over(or divided by)2
anonymous
  • anonymous
-0.375?
anonymous
  • anonymous
Not quite sure how you got that. There is an easier way to do it. Since the left equation is being divided by 2, to get rid of the 2, all you have to do is multiply all of the "groupings" on the right side by two. So instead of the equation [ 7z - 1 / 2 = 3z - 2 ] it would be 7z - 1 = 6z - 4 ]. See what I did. |dw:1432916166225:dw|
anonymous
  • anonymous
Sorry for the terrible drawing. Not good with the tool xD.
anonymous
  • anonymous
z= -3/8 = -0.375
anonymous
  • anonymous
LMAO.... ikr..same here and i can not remember how to screen shot...lol
anonymous
  • anonymous
Basically what I did was multiplied the left side by 2 to get rid of the 2, and the right side by 2 to balance the equation.
anonymous
  • anonymous
So now that you have the equation 7z -1 = 6z - 4, do you know how to simplify it?
anonymous
  • anonymous
@TTinSC do you understand what I did? Or are you confused
anonymous
  • anonymous
i think after simplifying it is the z=-3/8 as a fraction or -0.375 as a #
anonymous
  • anonymous
I am not sure how you got that. Are you following the steps I am showing?
anonymous
  • anonymous
or at least i think so
anonymous
  • anonymous
soooo confused ... i was out sick for several weeks and i am now trying to basically cram all of this in and i do believe my brain is on overload... i swear there is smoke coming out of my ears...lol
anonymous
  • anonymous
That is not what I got. The last step is super easy. When you have the equation 7z -1 = 6z - 4, what I would do is add a 1 to both sides. So now your equation is 7z = 6z - 3. Then I would subtract the 6z from both sides. So z = -3. Is this a multiply choice thing or short answer?
anonymous
  • anonymous
|dw:1432916734196:dw||dw:1432916755139:dw||dw:1432916776530:dw|
anonymous
  • anonymous
ok... not 100% on understanding... i think i keep skipping a step... but looking at what you did i think i understand now :)
anonymous
  • anonymous
so z=-3
anonymous
  • anonymous
Ok. If you don't please let me know. I had missed a lot of days too and it always came back to kill me on tests. All I did was subtract, divide, and add values from each side (making sure what I did to one side I did to the other so the equation stayed balanced) and got "z" alone
anonymous
  • anonymous
And yes z = -3 based on my answer
anonymous
  • anonymous
u in k12?
anonymous
  • anonymous
No. Why?
anonymous
  • anonymous
i got sick missed several weeks came back got locked out bc study island was behind ..bc i had been sick ...by the time i got the ols back open i had missed from the begining of Nov. tho the first of march.... it is just overwhelming me to try and catch up... got all other subjects caught up , but only have to do the assesments for math... only have till next Thursday... current math grde...36%... i have always been on the honor roll and the superintendents list but this year i am tanking and so frustrated at this point that i am ready to cry...
anonymous
  • anonymous
Woah. Well then... all I can say is I wish you the best of luck and hang in there. It should get better.
anonymous
  • anonymous
i am working on the first semester exam atm... and you only get 1 chance. i have to get atleast an 80 on it. most of the tests give you 3 tries to get the highest grade... not this tho
anonymous
  • anonymous
Yea, I know the feeling. I am in a virtual program as well and it gives the same situation.
anonymous
  • anonymous
ok... this one is a word problem... i think i have the answer
anonymous
  • anonymous
when 8 subtracted from Ollie's age result is same as subtracting 16 from 3 times Ollie's age how old is Ollie
anonymous
  • anonymous
I have to take care of something real quick I'll be back in a minute.
anonymous
  • anonymous
if Ollie =x x-8=y y=3x-16 x-8=3x-16 -8=2x-16 8=2x 4=x answer is 4 yrs. old
anonymous
  • anonymous
x-8=3x-16 -8=2x-16 8=2x 4=x
anonymous
  • anonymous
lol
anonymous
  • anonymous
tyvm
anonymous
  • anonymous
got some more... can u help?
anonymous
  • anonymous
sure =)
anonymous
  • anonymous
What is the standard form of the equation? 5x = 4y – 3 A. 5x – 4y + 3 = 0 B. 5x = 4y – 3 C. 5x + 3 = 4y D. 5x – 4y = –3
anonymous
  • anonymous
not so great with these
anonymous
  • anonymous
subtract 4y and add 3 to both sides
anonymous
  • anonymous
that would be setting y to 0 i cant remember if thats standard or not but its setting y to 0
anonymous
  • anonymous
not the slightest idea trying to search thru book for the process
anonymous
  • anonymous
think the answer is A
anonymous
  • anonymous
Standard form is A + B = C. I would do a quick google search for "standard form" but I believe the answer is D
anonymous
  • anonymous
Ah I remember now. Standard form is when the equation goes from highest numbers (with variables) to lowest numbers, then to numbers without variables. So basically highest to lowest numbers with variables, then if no variables highest to lowest. |dw:1432918595652:dw| Above is an example with random numbers and variables
anonymous
  • anonymous
ur right Liam... it is D
anonymous
  • anonymous
What is the slope of the line 4y – 6x + 12 = 0 in simplest form?
anonymous
  • anonymous
i do not get the slope thing at all.... spent 6 hours yesterday trying to figure it out...
anonymous
  • anonymous
Do you know what slope intercept forms is. It is y = mx + b. So what you are trying to do is get the 4y alone on one side. (kinda like we did earlier) any ideas on what to move first?
anonymous
  • anonymous
no... somehow i got a few right yesterday but i can not duplicate it...
anonymous
  • anonymous
give me a sec... gonna try the formula i used yesterday just got to find it in my notebook...
anonymous
  • anonymous
i subtract 12 from both sides and add 6x to both sides and get 4y=6x-12 then divide by 4 on each side right?
anonymous
  • anonymous
Ok. What i would do first is take the equation 4y - 6x + 12 = 0 and add a 6x to both sides. |dw:1432918942424:dw| Now you have 4y + 12 = 6x. I would subract a 12 from both sides. |dw:1432919001252:dw| Now you have 4y = 6x + 12. If you notice it looks like Y = mx + b. Now, y is still not alone because of the 4, so you have to divide every term by 4. Look at this picture for help because this is tricky. |dw:1432919070957:dw| So now you have y = 6/4x + 12 (y = 1.5x + 12). So the slope in simplest form would be 6/4 or 1.5
anonymous
  • anonymous
it asks for a fraction answer so that would be 3/2
anonymous
  • anonymous
|dw:1432919197749:dw| the "m" in the equation always equals the slope
anonymous
  • anonymous
simplified ...right??
anonymous
  • anonymous
and yes 3/2. I didn't simplify the 6/4 :/
anonymous
  • anonymous
What is the y-intercept of the line represented by the equation? y = 7x + 2
anonymous
  • anonymous
I was going to say this beofe but didn't. In the equation y = mx + b (or your equation y = 7x +2) the m (or 7) always equals the slope and the b (or 2) always equals the y intercept
anonymous
  • anonymous
before*
anonymous
  • anonymous
ok... so in the new problem will that help me solve for the y intercept
anonymous
  • anonymous
Yes
anonymous
  • anonymous
|dw:1432919504898:dw| @TTinSC what did I say the "b" was equal to?
anonymous
  • anonymous
so the answer would be 2... bc it is clearly stated in the equation...right... i think
anonymous
  • anonymous
Yes
anonymous
  • anonymous
Easiest question ever right xD
anonymous
  • anonymous
sweet... ha i get that really good now ...lol
anonymous
  • anonymous
Haha. Anymore?
anonymous
  • anonymous
yep
1 Attachment
anonymous
  • anonymous
so very much h8 these... y did they have to take the fun out of graphs lol
anonymous
  • anonymous
Can't open that file
anonymous
  • anonymous
ok... i used apache open office... it should work with windows ms office... let me try something else... it is a graph
anonymous
  • anonymous
sorry wifi dropped ...
anonymous
  • anonymous
What is the equation of the line expressed in slope-intercept form? y = –3x – 1 y = 3x + 2 y = 2x + 3 y = –2x + 3

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