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/biz/ - Business & Finance

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10266778 No.10266778 [Reply] [Original]

if you can't solve this there is no way you will ever make it in crypto.

>> No.10266792

-11/3

>> No.10266805

>>10266778
gee math sure is hard when you spend all day in front of a superpowered math machine
http://www.wolframalpha.com/input/?i=(4%2B3x)+(3%2B4x)+%3D+49

>> No.10266807

Literally 3rd grade maths in Europe

>> No.10266816

x=1 and -11/3 by inspection

>too smart to buy crypto

>> No.10266831

>>10266816
i'm not american so i got x=1.
what do you mean by the part about "inspection"?

>> No.10266833

>>10266805
kek, this

>> No.10266839

x = 1

( 4 + [ 3 * 1 = 3] = 7 ) * ( 4 + [ 3 * 1 = 3] = 7 ) = 49

>> No.10266861

You need neither FOIL nor the quadratic equation to speculate on shitcoins.

>> No.10266867

>>10266805
way to fuck it up faggot. OP you're a faggot too. Do your own homework kid!

>> No.10266873

>>10266831
by inspection is used in mathematics when you solve a problem by looking at it

>>10266805
You typed in the problem

>> No.10266889

>>10266778
dunno lol

>> No.10266921

>>10266778
(4+3*0)(4+3*14)=49

easy??

>> No.10266931
File: 7 KB, 221x250, brainlet.jpg [View same] [iqdb] [saucenao] [google]
10266931

>>10266921
Never mind i'm retarded.

>> No.10266937

>>10266831
This is a nontrivial polynomial equation of degree, so there exist only 2 solutions. He has found both of them, hence he is done with finding all of them.

>> No.10266948

>>10266831
Inspect element in chrome, you could HTML the fractions

>> No.10266949

>>10266778
(4+3*1)(4+3*1)

>> No.10266962

>>10266807
literally high school math in America

>> No.10266975

>>10266962
>implying high schoolers learn anything between black classmates getting arrested in class and mexicans dealing drugs on the toilet while whites go on a rampage in the cafeteria

>> No.10266977

x = 1

What the fuck? How would you not be able to solve this? This took 2 seconds of mental math.

>> No.10266990

>>10266778
x=1

>> No.10267007

>>10266873
*typed in the problem incorrectly

The absolute state of millenials

>> No.10267061

>>10266792
>-11/3
>haha you fucking idiot it's 1
>feeling superior
>t. biz

>> No.10267071

>>10266977
There is two solutions dolt. -11/3 is also a solution.

It makes me sad that people think 4chan users are smart and literally can’t solve the most basic of algebra equations

>> No.10267091

Why is there no multiplication sign between the 2 arguments? Is this normal in burgerland?

>> No.10267108

Trick question... the answer is already listed dumbasses. It's 49

>> No.10267113

>>10267091
uh.... I have bad news for you anon

>> No.10267117

>>10266861
>foil
>quadratic equation

Except you don't need any of those to solve this question.

>> No.10267119

For the brainlets, first FOIL (first, outer, inner, last) which gives you:

16+12x+12x+9x^2=49

Put in quadratic form:

9x^2+24x-33=0

If you don’t know the quadratic equation, you should not have passed 4th/5th grade math.

>> No.10267153

>>10267117
This. You should be able to just look at this and see know the answer is '1' as 7*7=49

>> No.10267167

>>10267117
Not sure how one would easily come up with -11/3 as a solution without using the quadratic equation, but also haven’t solved any such algebra equations in a long time. How would you solve?

>> No.10267172
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10267172

>>10266778
> Solving trivial high school math problems
is this the new /biz/?

>> No.10267174

>>10267153
This. But -7*-7 is also 49 so that means 3*x has to be -11 which means x can also be -11/3.

t. Burger

>> No.10267180

>>10266805
>math genius
>fails at copy&paste

>> No.10267184

>>10267153
So how do you “just look at it” and see that -11/3 also satisfies the equation...?

>> No.10267187

If anyone wants to know how to actually work it out manually:

>4*4 = 16
>4*3x=12x
>3x*4=12x
>3x*3x=9x^2
>9x^2+24x+16=49
>9x^2+24x-33=0
>3(3x^2+8x-11)=0
>3x^2-3x+11x-11=0
>3x(x-1)+11(x-1)=0
>(3x+11)(x-1)

>3x+11=0
>3x=-11
>x=-11/3

x-1=0
x=1

Result: x = 1, x = -11/3

>> No.10267207

>>10267174
Haha, yea, that works too...good point

>> No.10267210

>>10267153
dumbass gets half-credit

>> No.10267223

>>10267167
When doing the square root of 49, the result is both plus and minus 7.

>> No.10267244

>Has math minor
>Still has to google quadratic formula

I'm not going to make it - also college is a fucking joke

>> No.10267245

>>10267167
see >>10267187

>> No.10267247

I hope this is a larp thread

>> No.10267283

>>10267184
Clearly the values in () must both be 7 or negative 7. x=1 works for seven and to get -7 you need to add 4 and -11 but you multiply x by three so that's -11/3

>> No.10267293
File: 3.28 MB, 4032x3024, fucksakes.jpg [View same] [iqdb] [saucenao] [google]
10267293

>>10266778

>> No.10267302

>>10266792
negative numbers don't actually exist.

>> No.10267373

>>10267293
great job wasting time using the quadratic formula when it wasn't necessary.

>> No.10267398
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10267398

I think I stopped keeping an easy pace with math class around 6th grade. I can barely do the shit in my head.

>> No.10267427
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10267427

>if you can't swim there is no way you can run

>> No.10267428

>>10266778
x=1
7x7= 49
have 6000k LINKS, will l make it?

>> No.10267443

>>10267293

what's this retarded shit?

solved the equation in my head in 5 seconds

>> No.10267457

x=1
x=-11/3

>> No.10267479

>>10267167
at first glance you will notice both parentheses are the same so its simply ()^2. the other side is 7^2 or -7^2
4*3x = 7 and 4*3x= -7 is basic math then

>> No.10267538

x=1 could certainly work. But other solutions? impossible to know

>> No.10267598

>>10266778
The ONLY right way if you did actual algebra

(4+3x)(4+3x) = 49
(4+3x)^2 = 49
4+3x = 7
3x = 3
x = 1

>> No.10267641

>>10266778
x=1

>> No.10267689
File: 138 KB, 1252x1252, 1516284031599.jpg [View same] [iqdb] [saucenao] [google]
10267689

>>10267598
> Interesting, since if you fill in x = -11/3 in the original formula, it gives a solution.

Hmmmmmmmmmmm
Why dont these threads ever get a decent fucking math problem. This is all kiddy shit.

>> No.10267908

>>10266831
It is squared and polynomial equations have two solutions, one negative, the other is positive.

>>10266816
>>too smart to buy crypto
how do you invest your money? share your strategy pl0x.

>> No.10267926

>>10266778
is this what people actually find hard? I did this stuff in year 7... this is literally simple maths wtf.

>> No.10267933

>>10267926
solve it then pussy

>> No.10267945

>>10267933
x=7.3

>> No.10267952
File: 93 KB, 645x729, 1508831242706.png [View same] [iqdb] [saucenao] [google]
10267952

>>10267945
LOL

>> No.10267969
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10267969

>>10267427
>I can't walk , I can only run.

>> No.10267971

>>10267952
>t. retard who can't do 1+1

>> No.10267984

>>10266778
>notice the equations in brackets are same
>know that 49 can be expressed as 7 squared, so each bracket term must be equal to 7
>back out the 4 to know 3x must equal 3
>x=1

If you couldn't figure this out intuitively you're fucking never going to make it

>> No.10267989

>>10267971
I hope you're trying to troll because you unironically got it wrong dude

>> No.10268007
File: 31 KB, 128x125, 1506114168811.png [View same] [iqdb] [saucenao] [google]
10268007

>>10266778
>solve for x
(4 + 3x)(4 + 3x) = 49
>also written as
(4 + 3x)^2 = 49

>you start by multiplying each pair of terms
3x * 3x = 9x^2
4 * 3x = 12x
3x * 4 = 12x
4 * 4 = 16

>you should now have:
9x^2 + 12x + 12x + 16 = 49

>simply that shit, nigga
9x^2 + 24x - 33 = 0

>now give up because the next step is too hard
x = 1-800-wish-a-nigga-would

and then you flunk out of school and do drugs

>> No.10268019

>>10266831
that you will NOT make it.

>> No.10268032

>>10267969
>who is usain bolt
retard

>> No.10268126
File: 172 KB, 350x200, bog.png [View same] [iqdb] [saucenao] [google]
10268126

>he thinks he will make it in trading/finance without using stochastic calculus and brownian motion processes to model prices

Keep freehand drawing arbitrary lines on historical charts. If you do it enough times it's bound to work at least once

>> No.10268474

>>10268126
Meme lines work.

>> No.10268849

>>10266778
.34

>> No.10269147

MY BASIC MATH STAYS SUPER GASH, KYS EOY

>> No.10269477

>>10267119
This guy fucks

However, I don't remember how to solve X from that point

>> No.10269505

>>10267187
Thank you

>> No.10269506

>>10267119
retard.

(4 +3x) are both the same.
so
>a * a = 49;
>sqrt(49) = 7;
>4 + 3x = 7;
>7-4 = 3;
>3x = 3;
>x=1;

>> No.10269527

>>10269506
>sqrt(49) = 7
the worst part is that nobody in this thread managed to figure out sqrt has two results, not one.

>> No.10269627

>>10269527
see>>10267457

>> No.10269642

>>10266931
I hope you were joking

>> No.10269664
File: 82 KB, 454x450, Screen Shot 2018-07-14 at 22.44.36.png [View same] [iqdb] [saucenao] [google]
10269664

>>10269527
>sqrt can be more than one number
>pfft hblfff plftttt

>> No.10269670

>>10267187
or you could take the square root of both sides:

(4 + 3x)^2 = 49
... take square root, remembering the negative solution ...
(4 + 3x) = 7 or (4 + 3x) = -7
... solve via normal means ...
x = 1 or x = -11/3

>> No.10269679

>>10269664
is this the power of the american superstate?

>> No.10269707 [DELETED] 

>>10269679
he's being pedantic, but he's technically right
the square root of 49 can only be 7
but you're right that if x^2 = 49, x can be 7 or -7

>> No.10269719

>>10269707
i'll take that as a yes

>> No.10269748
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10269748

>>10266805
>elementary school algebra

you are like baby

>> No.10269771

>>10267108
Kek

>> No.10269787

(4+3x)(4+3x)=49
Square root it all and you get
(4+3x)=7
x=1

Why is this so hard for you fags?

>> No.10269791

1

>> No.10269819

>>10266778
answer is 1/7

>> No.10269841
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10269841

>>10267293

>> No.10269892
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10269892

>>10266778
kek already made it in crypto. And no, I can't solve that problem since I can't remember all the mathematic rules from 7 years ago.

>> No.10269901

are most of these people just fucking around or is biz really that fucking dumb?

>> No.10269905

>>10269787
because you only took the principal square root you brainlet

(4 + 3x)^2 = 49
4 + 3x = +/- 7
3x = -4 +/- 7
x = -4/3 +/- 7/3

{-11/3, 1}

>> No.10269940

>>10269787
You are forgetting that (-4-3x)=49 which is -11/3

>> No.10269955

>>10269905
wtf this makes no sense lmfao how can one variable equal 3 different numbers of one equation brainlet

>> No.10269966

>>10269901
its not biz fault. This is literally american high school math. While in Europe you learn this stuff in middle school. Thats why American SAT is a joke. My cousin in 9º grade could ace it easy(the math part). And he is average.

>> No.10269976

>>10269955
Pls tell me you are trolling. And btw its only 2 diferent numbers.

>> No.10269983

>>10269955
Trolling? He posted 2 different numbers since x has 2 different possible values:
-11/3
1

>> No.10270004

>>10269966
I think the worst part of their SAT's are that all the questions are only multiple choice and have 0 more difficult problems where they have to show complete work

>> No.10270011

>>10269901
biz is dumb, just look at archive of the six balls problem thread (3 gold and 3 silver in three boxes)

>> No.10270013

whatever i was never good at math thats why im in management not basedgineering

>> No.10270068

Lmao at these anons trying to solve what X is. Just fucking remove it from both encapsulations because X always cancels out X.

>> No.10270159

>>10267598
>mfw I over complicated the equation and FOILed for no reason
>An engineer
lol nice little brain teaser, Multiple way to get to an answer, but the most simple is always the correct answer.
In reality this proves nothing in trading crypto.

>> No.10270172
File: 40 KB, 480x480, 1486264772333.jpg [View same] [iqdb] [saucenao] [google]
10270172

>>10270068
give another example, this one was easy

>> No.10270226

>>10267119
>Foil and quadratic formula virgin
>Chad square rooting:
(4 + 3x)(4+3x) = 49
(4 + 3x)^2 = 7^2
|4 + 3x| = 7
x = 1, x = -11/3

>> No.10270234

>>10266778
x=1
I got a finna clue and realized you can just copy OP's picture into paint instead of writing the problem with a mouse.

>> No.10270261

x = 1 , x = -11/3

>> No.10270343

x1,2 = -p/2 +- sqrt((p/2)^2 -q)

x1 = 11/3
x2 = 33

>> No.10270362

can people who are good at math do this in their head? i get like halfway through it and start feeling retarded lol.

>> No.10270397

>>10270343
-33 i meant

>> No.10270414
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10270414

>>10269841
> Its funny cause its true.
:(

>> No.10270721

>>10266778
i mean ur not wrong, but ur also wrong

>> No.10270774

>>10270362
yeah, just think that its the exact same thing inside both parenthesis, and it equals 49
so what number times itself equals 49
7 and -7
then just set one of them equal to both
4+3x=7
4+3x=-7
solve for x, super easy

>> No.10270812

>>10270362
4+3 is 7
7*7 is 49
x=1
thats it lmao