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 Isolating 2 veriables

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ChocolateRain

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PostSubject: Isolating 2 veriables   Wed Apr 08, 2009 11:07 pm

how do you do it? o.o I NEED to know tonight, i have a test tomorrow. Can someone help?
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Findows⁷

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PostSubject: Re: Isolating 2 veriables   Wed Apr 08, 2009 11:15 pm

whats the question?

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ChocolateRain

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PostSubject: Re: Isolating 2 veriables   Wed Apr 08, 2009 11:16 pm

I don't have a specific question, i need help in general x_x
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Findows⁷

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PostSubject: Re: Isolating 2 veriables   Wed Apr 08, 2009 11:17 pm

give me an example so i can show you

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Lukyhawk

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PostSubject: Re: Isolating 2 veriables   Thu Apr 09, 2009 2:39 am

what class is this? Algebra?

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[20:43:16] Azness♥️ : Sarcasm is a puberty thing

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StebenL

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PostSubject: Re: Isolating 2 veriables   Thu Apr 09, 2009 8:33 am

Yeah it is.
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ChocolateRain

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PostSubject: Re: Isolating 2 veriables   Thu Apr 09, 2009 4:01 pm

hmmmm.... even though i already did the test, i still don't get it >.<

Here:

In a grade 6 class, theirs 33 students. There are 9 more girls then boys. How many boys and girls are in the class?
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StebenL

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PostSubject: Re: Isolating 2 veriables   Thu Apr 09, 2009 5:33 pm

Easy.
33 minus 9 equals 24
Divide by 2.
12 plus 9
12 boys and 21 girls.
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Lukyhawk

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PostSubject: Re: Isolating 2 veriables   Thu Apr 09, 2009 6:03 pm

oh thats simple. just set up the equasion. and solve for it.

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^WIN. Nuff said.


[20:43:16] Azness♥️ : Sarcasm is a puberty thing

^
Truest words ever said.

Hold fast to dreams
For when dreams go
Life is a barren field
Frozen with snow.
Hold fast to dreams
For if dreams die
Life is a broken-winged bird
That cannot fly.
Langston Hughes
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Lukyhawk

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PostSubject: Re: Isolating 2 veriables   Thu Apr 09, 2009 6:08 pm

Heres how you should set up and solve your equation.

33 (# of kids in class) = X (X will represent boys in class) + (x+9)
Simplify
33 = 2X + 9
subtract 9 from both sides.
24 = 2X
divide both sides by 2
12 = X
Therefore there are 12 boys and since there are 9 more girls than boys there are 21 girls. Add them together and they equal 33. That's your answer, 12 boys and 21 girls.

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^WIN. Nuff said.


[20:43:16] Azness♥️ : Sarcasm is a puberty thing

^
Truest words ever said.

Hold fast to dreams
For when dreams go
Life is a barren field
Frozen with snow.
Hold fast to dreams
For if dreams die
Life is a broken-winged bird
That cannot fly.
Langston Hughes
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ChocolateRain

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PostSubject: Re: Isolating 2 veriables   Thu Apr 09, 2009 10:09 pm

o.o WOW that is so different then what I got:


I got 24 boys, and 33 girls o.o
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PostSubject: Re: Isolating 2 veriables   Thu Apr 09, 2009 11:11 pm

I know what you did wrong. You set up the equation as:

33 = x+9

However that's incorrect, that's basically saying that x (this will represent the # of boys) + 9 girls/boys will equal 33. That's not right. The correct equation is this:

33 = x+ (x+9)

See the difference? You have to account for both variables, x and x+9. X representing the amount of boys and x+9 representing the amount of girls. It's x+9 because if we choose to use x as our variable for the amount of boys, and the problem states that there are 9 more girls than there are boys, you have to add a +9 to the x. Any more questions?

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^WIN. Nuff said.


[20:43:16] Azness♥️ : Sarcasm is a puberty thing

^
Truest words ever said.

Hold fast to dreams
For when dreams go
Life is a barren field
Frozen with snow.
Hold fast to dreams
For if dreams die
Life is a broken-winged bird
That cannot fly.
Langston Hughes
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frb4

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PostSubject: Re: Isolating 2 veriables   Fri Apr 10, 2009 5:13 pm

Wow I'm in Algebra 1 now and we haven't done anything liek this....



>_>
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ChocolateRain

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PostSubject: Re: Isolating 2 veriables   Fri Apr 10, 2009 6:42 pm

ch4rg3rs4lyf wrote:
I know what you did wrong. You set up the equation as:

33 = x+9

However that's incorrect, that's basically saying that x (this will represent the # of boys) + 9 girls/boys will equal 33. That's not right. The correct equation is this:

33 = x+ (x+9)

See the difference? You have to account for both variables, x and x+9. X representing the amount of boys and x+9 representing the amount of girls. It's x+9 because if we choose to use x as our variable for the amount of boys, and the problem states that there are 9 more girls than there are boys, you have to add a +9 to the x. Any more questions?

Actually, I did x + 9 - 9 + x = 33 - 9 = 24 + 9 = 33

24 boys and 33 girls o.o
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Chillax

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PostSubject: Re: Isolating 2 veriables   Mon Jun 01, 2009 7:34 pm

There are 33 students. Not 57. Unless they all had underage sex and had 24 babies.
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MunchingOrange

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PostSubject: Re: Isolating 2 veriables   Tue Jun 02, 2009 12:25 pm

I consider myself a math nerd...

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StebenL

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PostSubject: Re: Isolating 2 veriables   Tue Jun 02, 2009 12:27 pm

This is an old topic.
And Eli, I'm in calc >_>
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NightShroud_BE

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PostSubject: Re: Isolating 2 veriables   Thu Jun 04, 2009 12:05 pm

Damn , my exams are coming up (like most people) and I'm starting with Math .
I'm doing Science With the option of 6 houres of math and it's a damn hard exam .
I know most of you don't care about this but it's pretty hard .
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Lukyhawk

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PostSubject: Re: Isolating 2 veriables   Sun Jun 14, 2009 9:02 pm

why are we keeping this topic alive? somebody ask for more help :(

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^WIN. Nuff said.


[20:43:16] Azness♥️ : Sarcasm is a puberty thing

^
Truest words ever said.

Hold fast to dreams
For when dreams go
Life is a barren field
Frozen with snow.
Hold fast to dreams
For if dreams die
Life is a broken-winged bird
That cannot fly.
Langston Hughes
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RagingChadzi

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PostSubject: Re: Isolating 2 veriables   Fri Jun 26, 2009 8:05 pm

Steven, you can't even use The Pythagorean Theorem To solve for c, so gtfo with that calc crap.
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StebenL

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PostSubject: Re: Isolating 2 veriables   Fri Jun 26, 2009 9:46 pm

RagingChadzi wrote:
Steven, you can't even use The Pythagorean Theorem To solve for c, so gtfo with that calc crap.
Lol my ass I can't.
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Zangoose

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PostSubject: Re: Isolating 2 veriables   Fri Jun 26, 2009 9:57 pm

Ewww. I hate math. I'm more of a language person myself.
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