/sci/ - Science & Math

[Anonymous No.2659566]

Iv'e been wondering if the majority of people on this board are kids or people that can actually do math and science.

So ill get a rough % of people who can at least do algebra by comparing the % of people who get this systems of linear equations right to those who get it wrong.

Think of it as a science experiment.

[Anonymous No.2659597]

You posted a similar question the other day, what's up with that? Also learn to random sample.

[Anonymous No.2659607]

>>2659597
its a different problem

[Anonymous No.2659612]

>>2659566
>linear

wat

[Anonymous No.2659619]

x = -8 +- sqrt(80) / 4
y = (-8 +- sqrt(80) / 4) + 4
cba to get calculator

[Anonymous No.2659628]

>>2659612
winrar

also, even though it's simple to solve, i'm not going to do it.

inb4 u dont know math if you cant do some particular process

[Anonymous No.2659634]

I'm not doing your homework again man. Not because I don't want to help but because your fucking lying about this "science experiment". Just directly ask for help with your homework next time.

[Anonymous No.2659637]

y = 1.736, y = -2.736
x = -2.736, x = -6.736

[Anonymous No.2659638]

>>2659612
meant non-linear

sorry for the Typo
>>2659619
Wrong it not even close to being in reduced form

[Anonymous No.2659652]

> people who can at least do algebra
OP is not one of those people, because his system is not solvable by "algebra."

[Anonymous No.2659653]

y=x+4

x^2+(x+4)^2=18
2x^2+8x+16=18
x^2+4x-2=0

lolquadraticformula

x=[-4+/-sqrt(16+8)]/2=0.449 OR -4.449

y=x+4=4.449 OR -0.499

OP is a wizard

[Anonymous No.2659662]

>>2659652
Er, sure it is?

[Anonymous No.2659667]

>>2659652
You're right. It's solvable by arithmetic, faggot.

[Anonymous No.2659669]

>>2659653
>mfw forgot to divide -2 by 2

x^2+4x-1=0

lolquadraticformula

x=[-4+/-sqrt(16+4)]/2=0.236 OR -4.236

y=x+4=4.236 OR -0.236

OP is still a wizard

[Anonymous No.2659672]

>>2659637
Nope

[Anonymous No.2659676]

>>2659653
Nope

[Anonymous No.2659680]

>>2659669
Now its right


so thats 1 person who got it right and... 2 people who got it wrong

not looking good guys

[Anonymous No.2659681]

Did you just learn that in school OP?

[Anonymous No.2659688]

How is this a linear system when X and Y are squared?

[Anonymous No.2659694]

>>2659667
It's also solvable by typing

[Anonymous No.2659692]

>>2659688
Its not linear it was a typo

[Anonymous No.2659696]

>>2659619
Admitting I typed my parentheses badly, but that *is* the right answer... /pride

[Anonymous No.2659723]

>>2659696
technically correct but it really should be in reduced form.

[Anonymous No.2659732]

>>2659723
>why
>because my teacher told me it should

[Anonymous No.2659739]

x= y - 4
y2 - 8y + 16 + y2 =18
2y2 - 8y - 2 =0
y2 - 4y - 1 =0
(y-2)2 - 5=0
(y-2)2 = 5
y - 2 = sqrt(5)
y = sqrt(5) + 2
x = 4 - sqrt(5) - 2
yarp?

[Anonymous No.2659740]

>>2659732
because y=2+sqrt5 is so much better

[Anonymous No.2659745]

>>2659739
there are more then 1 answer for both X and Y

[Anonymous No.2659751]

add equations

X + Y^3 = 22

Y=(4+X)

X+(4+X)^3 = 22

solve for X

use Y-X = 4 to solve for Y

what do I win

[Anonymous No.2659771]

>>2659751
>y+y^2=y^3
>x^2-x=x

[Anonymous No.2659777]

>>2659751
Leave /sci/ learn Algebra 2 then come back

[Anonymous No.2659787]

Use TeX/jsMath with the <span class="math"> (inline) and <div class="math"> (block) tags. Double-click equations to view the source.

How?[/spoiler]</div>

[Anonymous No.2659794]

>>2659787
The fuck is this?

[Anonymous No.2659820]

>>2659566

why ask if the majority of the people here are kids and then ask a simple algebra problem?

at least ask them to integrate or something, faggot

[Anonymous No.2659832]

>>2659794
This: http://www.tug.org/

[Anonymous No.2659837]

Testan >>2659794

<span class="math">\frac{2}{3}[/spoiler]

[Anonymous No.2659870]

>quadratic formula?

Complete the square you lazy fucks and prove you actually understand what you're doing.