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-   -   How the hell do I do this crap? (https://www.graalians.com/forums/showthread.php?t=12297)

Ignatius 11-26-2012 10:11 PM

How the hell do I do this crap?
 
How do I find K?

7=k/15

Rufus 11-26-2012 10:13 PM

15 * 7 = 105
105/15 = 7

Therefore k = 105

Dusty 11-26-2012 10:21 PM

Did they not teach inverse operations or were you not paying attention? O.o

Talon 11-26-2012 10:24 PM

Why ask Graalians? Don't you have a textbook? Also, Internet.

Godoco 11-26-2012 10:29 PM

Might i ask your age?

MrSimons 11-26-2012 10:46 PM

Quote:

Posted by Godoco (Post 241779)
Might i ask your age?

At this point in time I don't think your age has anything to do with intelligence or maturity, hell I know a third grader in higher math classes than people my age.

Godoco 11-26-2012 10:51 PM

Quote:

Posted by MrSimons (Post 241785)
At this point in time I don't think your age has anything to do with intelligence or maturity, hell I know a third grader in higher math classes than people my age.

Never said, Its just that you learn the inverse operations in about 5th grade...

Ignatius 11-26-2012 11:00 PM

Quote:

Posted by Dusty (Post 241775)
Did they not teach inverse operations or were you not paying attention? O.o

I wasn't paying attention, thats what they're teaching now. And I don't know it for balls.

So they want me doing some stuff like:

7/15=k/15/15 or something...

Can you guys teach me it?

Quote:

Posted by MrSimons (Post 241785)
At this point in time I don't think your age has anything to do with intelligence or maturity, hell I know a third grader in higher math classes than people my age.

Probably me

as in I am ******ed.

Also, I'm in 7th

MrSimons 11-26-2012 11:01 PM

Quote:

Posted by Godoco (Post 241787)
Never said, Its just that you learn the inverse operations in about 5th grade...

Which is the age kids decide to become badasses and stop paying attention in class.

Dusty 11-26-2012 11:07 PM

It's simple, to solve for x(or any variable) you must do the opposite of what is being done, thus inverse operations. In your case k is being divided, so the inverse would be multiplication. However it does get much more complicated as the equations add more variables and operations. Seriously dude, pay attention. Everything you do in future courses with the slightest bit of math are going to require this basic set of skills. Math is a progressive skillset, and if you skimp out at the basics you'll only make it so much harder on yourself as you progress in high school.

Honestly this is probably not a great learning environment, or at least it's a redundant one. There are lots of sites purely dedicated to teaching students this sort of thing, and even communities for it.

This is the first google result I found:
http://tutoring.sylvanlearning.com/n.../0704/math.cfm
http://www.wtamu.edu/academic/anns/m...b/beg_algebra/

The Doctor 11-26-2012 11:11 PM

It's fairly easy. I did it years ago. So when you get an equation like this:

7+x=13

You'd subtract 7 from both sides of the equation.

7+x=13
-7 -7
_______
x=6

The reason you're subtracting 7 from both sides is because 7 is positive. You subtract from both sides because it balances it out from the equation. Let's try multiplication.

7*x=42

You have to divide 7, because it's multiplication. You always do the opposite to balance it out.

7*x=42
/7 /7
______
x=6

Fairly simple. Ask me anything.

Ironically enough, x is the same for both equations o.o

Pimpsy G. 11-26-2012 11:14 PM

I'm guessing you're under 12 years old. If you saw calculus and things like derivatives your head would explode xD.

The Doctor 11-26-2012 11:17 PM

I'm learning, in math, Standard Form for line equations. I'm bored out of my mind. We just finished Slope Intercept, Point Slope Form, and Function Notations.

I should be in a higher math class.

Dusty 11-26-2012 11:19 PM

My problem with math you do in class is it's less about problem solving/knowledge and more about teachers trying to trick you with tricky equations and ****. I can't remember how many questions/tests I got marked with wrong answers because most teachers like to "test" you by purposefully writing an equation/question that is more of a trick question than a test of your knowledge.

****ing math teachers.

The Doctor 11-26-2012 11:41 PM

Quick Question: The equation doesn't define y. Is it 0? Here's the equation. All I need is information to find y.

Identify m, b, and then graph the equation

x=-2

m=_______

b=________


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