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Wewum #1 Posted Jan 06 2014 - 22:30

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Can someone help me with my algebra homework? I'm in 7th grade doing Algebra. Heres the problem: It's a triple line simultaneous equation: 5x-2y-5z = -1, 2nd line: - x +2y-5z= -9, and -10x+4y+10z=-2. Thanks for helping because I know there older kids that are in high school and beyond that can help! (Math can be hard)

Edited by Wewum, Jan 06 2014 - 22:48.


M477145_N1l550n #2 Posted Jan 06 2014 - 22:31

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We DO have an "Off-Topic" section, you know.

deathbybulletsmg42 #3 Posted Jan 06 2014 - 22:33

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View PostM477145_N1l550n, on Jan 06 2014 - 16:31, said:

We DO have an "Off-Topic" section, you know.

 

Some people I guess don't......  :facepalm:



Sgt_Sinful_Needs #4 Posted Jan 06 2014 - 22:34

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View PostWewum, on Jan 06 2014 - 13:30, said:

Can someone help me with my algebra homework so I can get to playing WoT? I'm in 7th grade doing Algebra. Heres the problem: It's a triple line simultaneous equation: 5x-2y-5z = -1, 2nd line: - x +2y-5z= -9, and -10x+4y+10z=-2. Thanks for helping because I know there older kids that are in high school and beyond that can help! (Math can be hard)

 

Preaching to the choir, I had to take Algebra 9 three times before I finally passed [and even them it was probably more the result of pity]

I mean jez I took Typing thinking it was an easy credit and I could meet girls - here I am typing with one finger.

Are you still sure you want me helping with your homework?



Nimrodor #5 Posted Jan 06 2014 - 22:35

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He's looking for suggestions as to the answer.

 

Also, the answer is "You gotta show your work anyways".



_Zesty_ #6 Posted Jan 06 2014 - 22:38

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You're asking for Algebra Homework help on a gaming forum?

 

Now by "Help" do you mean, "Give me the answer so I can start playing World of Tanks"?

 

Then the answer is no. You must do this yourself or else you'll never learn.

 

Either get a tutor, ask your teacher for help, or don't bother trying and fail just because you want to play tanks.

 

School first, games later.



Wewum #7 Posted Jan 06 2014 - 22:40

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Sorry I'm new here I didn't know there was an Off-topic area I'll post there if I have off-topic posts.

hedshot56 #8 Posted Jan 06 2014 - 22:55

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Hold up, your school take TRIPLE LINE ALGEBRA in SEVENTH GRADE??? That's about ridiculous, I just now started doing that in eighth grade.

SGTChucklez #9 Posted Jan 06 2014 - 23:07

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Teacher: You cheated

 

Wewum: So?

 

Teacher: What's your source? Who helped you?

 

Wewum: World of Tanks forum.

 

Eh...?



Quantumkiwi #10 Posted Jan 06 2014 - 23:08

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Solve one of the equations in terms of x and sustitute that expression in both of the other equations. Then solve for y in one of the two other equations (the ones where you substituted your first expression) and substitute that expression in your last equation, leaving it only in terms of z.

 

Edit: As this probably made no sense whatsoever, here is a good video explaining how to do it: https://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/fancier-systems/v/systems-of-three-variables


Edited by Quantumkiwi, Jan 06 2014 - 23:14.


Sgt_Sinful_Needs #11 Posted Jan 06 2014 - 23:14

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View PostWewum, on Jan 06 2014 - 13:30, said:

Can someone help me with my algebra homework? I'm in 7th grade doing Algebra. Heres the problem: It's a triple line simultaneous equation: 5x-2y-5z = -1, 2nd line: - x +2y-5z= -9, and -10x+4y+10z=-2. Thanks for helping because I know there older kids that are in high school and beyond that can help! (Math can be hard)


1/ 5x-2y-5z = -1

2/ - x +2y-5z= -9

3/ -10x+4y+10z=-2

 

> the strategy is to reduce this to two equations in two unknowns... do that by eliminating one of the unknows for two pairs of equations.

I'll do that with equation 1 and 2 by adding the two equations together, thus eliminating the "y" calling this equation #4

 

4/ 4x - 10z = -10

 

> Next, well will eliminate another unknown from equations 1 and 2...

 

The further steps here; I got the ball rolling for you:

http://www.themathpage.com/alg/simultaneous-equations-3.htm

 

[sorry, as stated I entirely suck at math... that doesn't mean you should; I did the research - you learn the math.  I'm doing my damnest to be helpful, while being clueless, without giving a wrong answer - not an easy task LOL]

 

Q: You told us that any clan can win in the campaign, but the same old top clans won!
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Wewum #12 Posted Jan 14 2014 - 03:30

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Solved it guys, and by the way hedshot666

View Posthedshot56, on Jan 06 2014 - 22:55, said:

Hold up, your school take TRIPLE LINE ALGEBRA in SEVENTH GRADE??? That's about ridiculous, I just now started doing that in eighth grade.

Yep. Now we are doing quadruple line equations. Some kids start Algebra 1 in 6th grade BTW. xD And guys I figured it out BTW and thanks for the help Sgt_Sinful_needs. :D






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