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re: Lunch thread: I’ll paypal you $5 if you can tell me what’s wrong with my math-solved

Posted on 4/15/18 at 12:14 pm to
Posted by Averytiger
Member since Dec 2017
1366 posts
Posted on 4/15/18 at 12:14 pm to
quote:

aren't you a little old to still be in school?


Don't be a dick. Do you know how hard it is for non-traditional aged students to go back to the classroom? Be supportive. Most of them are juggling jobs and parenting along with trying to reintegrate into school.
Posted by Paige
Vice President of the OT
Member since Oct 2010
85640 posts
Posted on 4/15/18 at 12:14 pm to
The book sucks

I get the premise. I’m just doing something wrong. I watched the video and had an online tutoring lesson
Posted by tigercross
Member since Feb 2008
5075 posts
Posted on 4/15/18 at 12:14 pm to
In the bottom left you have -15x-62=-17. But you dropped the - from 15x. X should be -3 instead of 3.
Posted by celltech1981
Member since Jul 2014
8139 posts
Posted on 4/15/18 at 12:15 pm to
chegg is worth the 15 a month for shite like this
Posted by High C
viewing the fall....
Member since Nov 2012
62180 posts
Posted on 4/15/18 at 12:15 pm to
quote:

Does this sort of thing have any real world implication?


Yes, it implies that your vocabulary is lacking.

*application
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
72825 posts
Posted on 4/15/18 at 12:15 pm to
frickin mathlab
Posted by Averytiger
Member since Dec 2017
1366 posts
Posted on 4/15/18 at 12:17 pm to
I saw your non-traditional age student comment.

Hang in there. You can do this, Paige.

This is my 20th year of teaching. I've seen students move mountains. Believe in yourself.
Posted by Paige
Vice President of the OT
Member since Oct 2010
85640 posts
Posted on 4/15/18 at 12:17 pm to
Thank you. I’m so bad with careless errors. But the answer was 5, -4, 2

Still no clue what else I did wrong. Probably a bunch of little stuff like that throughout the problem
Posted by ldts
Member since Aug 2015
2937 posts
Posted on 4/15/18 at 12:17 pm to
When you go -3R1+5R2 shouldn't that be a negative 80? -15*-3=45, then -25*5=-125 so 45+(-125) would equal -80.
This post was edited on 4/15/18 at 12:19 pm
Posted by Ingeniero
Baton Rouge
Member since Dec 2013
23617 posts
Posted on 4/15/18 at 12:18 pm to
There's an easier way to do that, unless you're required to solve it that way. Use Cramer's rule and find the determinant.

LINK
Posted by Paige
Vice President of the OT
Member since Oct 2010
85640 posts
Posted on 4/15/18 at 12:19 pm to
What’s chegg?

I’m using wyzant for online tutoring which is $30 an hour and I do it 3-4 hours a week which adds up
Posted by Paige
Vice President of the OT
Member since Oct 2010
85640 posts
Posted on 4/15/18 at 12:20 pm to
Thanks Avery

It’s usually not this hard. Not sure why I’m struggling so much in algebra 2 when I made an a in algebra 1
Posted by crazyLSUstudent
391 miles away from Tiger Stadium
Member since Mar 2012
6206 posts
Posted on 4/15/18 at 12:20 pm to
Is this dif eq or cal1?
Posted by Averytiger
Member since Dec 2017
1366 posts
Posted on 4/15/18 at 12:20 pm to
quote:

Ok I have a big paper soon so I’ll hit you up then


Happy to help out. Just let me know when, and I'll give you my email address. I would post it now, but I don't need a week's worth of dick pics sent to me.
Posted by GeorgeTheGreek
Sparta, Greece
Member since Mar 2008
69576 posts
Posted on 4/15/18 at 12:21 pm to
Why are you doing math?
Posted by jac1280
Member since Dec 2007
5380 posts
Posted on 4/15/18 at 12:21 pm to
x = 5
y = -4
z = 2
Posted by tigercross
Member since Feb 2008
5075 posts
Posted on 4/15/18 at 12:21 pm to
I’m not sure if you’re required to solve using matrices, but if you aren’t, I’d start by adding the first and third equations together to solve for X. Then proceed from there.
Posted by Paige
Vice President of the OT
Member since Oct 2010
85640 posts
Posted on 4/15/18 at 12:26 pm to
You figured it out!

What’s your PayPal?

I’ve got to learn to pay better attention
Posted by wildtigercat93
Member since Jul 2011
116466 posts
Posted on 4/15/18 at 12:26 pm to
My math lab is some diabolical shite. It’ll tell you 2 plus 2 = 4 is wrong because there’s a space on th wrong side of the 4
Posted by Paige
Vice President of the OT
Member since Oct 2010
85640 posts
Posted on 4/15/18 at 12:27 pm to
Yeah we’re solving equations using matrices so I guess it’s required
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