HOMEWORK HELP Thread

[awfullyquiet]

Originally Posted by RoyHall#1

No science geniuses? Even a guess?

two ways.
magnet...
and then pour the sand and salt into water...
let the salt dissolve.
separate the salt and water.
and boil the salt...

the other way would be to melt off the iron (iron has a lower melting point than salt and sand), and then separate the salt and water... thats for brownie points.

[draftguru151]

Originally Posted by princefielder28

Can anyone validate 21.2 m/s???

It's 17.17. I made the mistake to think the time given was the time it took from the rock to go from the cliff to the water, I didn't think it counted the time of sound too.

[nvot9]

Anyone have any tips for the preterite tense in spanish?

[Hawk]

+ rep for anyone who will write a one page opinion paper on Sir Gawain and the Green Knight.



kidding.

but if you're bored....... :)

[TimD]

Originally Posted by Hawk

+ rep for anyone who will write a one page opinion paper on Sir Gawain and the Green Knight.



kidding.

but if you're bored....... :)

basically like what did you think of the story paper?

[Hawk]

Originally Posted by mangini for pres

basically like what did you think of the story paper?

ya but I already did it. you can do one on Morte d'Arthur tho haha

[TimD]

Originally Posted by Hawk

ya but I already did it. you can do one on Morte d'Arthur tho haha

didn't read that haha

[Notredameleo]

An investor has $20,000 to invest. If part was invested at 8% and the rest at 12%, how much should be invested at each rate to yield 11% on the total amount invested? (Remember: I=Prt)

[derza222]

Pretty sure it's 5,000 at 8% and 15,000 at 12%...

[Wootylicous]

Originally Posted by derza222

Pretty sure it's 5,000 at 8% and 15,000 at 12%...

I'm pretty sure it's that too

[UKfan]

Originally Posted by derza222

Pretty sure it's 5,000 at 8% and 15,000 at 12%...

It is that definitely

[JETS5128]

The revenue, R, recieved for selling x computers is given by the formula
R= -x2/5 + 80x-500. How many computers must be sold to obtain the maximum revenue?

***x2 means x squared

[Green Bay Scat]

anyone here know binary or hexadecimals?

[rainbeaukid2]

Originally Posted by Green Bay Scat

anyone here know binary or hexadecimals?

kinda, i am in AP computer science a.k.a the nerdiest class ever, this year

[Green Bay Scat]

Originally Posted by rainbeaukid2

kinda, i am in AP computer science a.k.a the nerdiest class ever, this year

isnt it the gayest **** uve ever heard? lol

[awfullyquiet]

Originally Posted by JETS5128

The revenue, R, recieved for selling x computers is given by the formula
R= -x2/5 + 80x-500. How many computers must be sold to obtain the maximum revenue?

***x2 means x squared

this is how you do it.
for my 1k post.

you take the derivitave of the equasion. r=(-x^2)/5+80x-500.

the derivitave of that is r'=-2x/5+80 (if you don't know how to get that let me know)

you solve for r'=-2x/5+80 (which is 200). 200 is the tangent point on the r equasion.

200 = 7500
201 = 7499.8
199 = 7499.8

200 is the correct answer.

and i know binary and hex too gbs
i do the computer science thing kinda well.
considering i am a programmer.

[Green Bay Scat]

Binary is really easy, hexadecimals are kinda hard, also adding and subtracting them, but i just think its stupid


hey quiet, im majoring in computer science and want to be a programmer, in really anything, but am not to nerdy, how is it being a programmer?

[JETS5128]

Originally Posted by awfullyquiet

this is how you do it.
for my 1k post.

you take the derivitave of the equasion. r=(-x^2)/5+80x-500.

the derivitave of that is r'=-2x/5+80 (if you don't know how to get that let me know)

you solve for r'=-2x/5+80 (which is 200). 200 is the tangent point on the r equasion.

200 = 7500
201 = 7499.8
199 = 7499.8

200 is the correct answer.

and i know binary and hex too gbs
i do the computer science thing kinda well.
considering i am a programmer.

Thank you very much, but can you tell me how you got the derivative of the initial problem?

[rainbeaukid2]

some kid in my class made a calculator program to convert binary to decimal and vice versa, so i never learned how to do it, i just used the program. so far it is kinda cool, i felt like a loser when i learned something in math today, and said "i could make a computer program that could do that", probably my nerdiest thought ever

[Green Bay Scat]

Originally Posted by rainbeaukid2

some kid in my class made a calculator program to convert binary to decimal and vice versa, so i never learned how to do it, i just used the program. so far it is kinda cool, i felt like a loser when i learned something in math today, and said "i could make a computer program that could do that", probably my nerdiest thought ever

hey, chicks dig the smart guy.....with MONEY!

im too stupid to be in a smart career, i seriously think ive takin more Asprin last year than anyone has in their lifes, during games, id take 16 of them lol

[rainbeaukid2]

Originally Posted by Green Bay Scat

hey, chicks dig the smart guy.....with MONEY!

im too stupid to be in a smart career, i seriously think ive takin more Asprin last year than anyone has in their lifes, during games, id take 16 of them lol

chicks dig me anyway, so i don't need the help. and i am in the smart classes anyway, but that is the only one i could actually call "nerdy"

EDIT:ITT tech could really help you out getting a career in computer programming, that is what my brother in law did

[Green Bay Scat]

Originally Posted by rainbeaukid2

chicks dig me anyway, so i don't need the help. and i am in the smart classes anyway, but that is the only one i could actually call "nerdy"

EDIT:ITT tech could really help you out getting a career in computer programming, that is what my brother in law did

well, when im done with football, ill do that, even if i major in it, cause at a specialty school u can always get better, btw whats ur Bro-n-law do?

[awfullyquiet]

Originally Posted by JETS5128

Thank you very much, but can you tell me how you got the derivative of the initial problem?

no prob.

to get to -2x/5+80 from -x^2/5+80x-500 comes to reducing the power of the variable by one.
so x2 would become x... and you multiply the coefficient by the power you reduced it from (which would be two). so it becomes -2x^1... since 80x is already at the first power 80*1 is still 80. and x^0 will always = 1. 500, since it doesn't have a variable attached to it becomes 0. and then you mark it as r'= -2x/5+80 because it's the original equasion derived (the r' is noted as r prime)...

so... i hope that worked? you're probably just starting calc one right?
it's a basic concept that you'll get really good at soon.

[JETS5128]

Originally Posted by awfullyquiet

no prob.

to get to -2x/5+80 from -x^2/5+80x-500 comes to reducing the power of the variable by one.
so x2 would become x... and you multiply the coefficient by the power you reduced it from (which would be two). so it becomes -2x^1... since 80x is already at the first power 80*1 is still 80. and x^0 will always = 1. 500, since it doesn't have a variable attached to it becomes 0. and then you mark it as r'= -2x/5+80 because it's the original equasion derived (the r' is noted as r prime)...

so... i hope that worked? you're probably just starting calc one right?
it's a basic concept that you'll get really good at soon.

Second half of Math B actually

Thank you much

[awfullyquiet]

Originally Posted by Green Bay Scat

Binary is really easy, hexadecimals are kinda hard, also adding and subtracting them, but i just think its stupid


hey quiet, im majoring in computer science and want to be a programmer, in really anything, but am not to nerdy, how is it being a programmer?

i'm not really nerdy either. i played in rock bands.
it's alright. there's not that many nerds.

it also depends on what your programming on how big of nerds you'll encounter. if you stick with ajax, .net, cfml, sql and oracle based programming, you'll be among the least nerdy.

when you start programming in ancient technology, then then nerds come out.

the pay is good. i don't dress up all the time. and i'm not really a 'programmer'... i used to be by trade... even though i'm an engineer (and not a CS style engineer, like a real, bread and butter Mechie)... nowadays, i just oversee programmers and data analysts and suck off a few middle management gurus and project managers to make sure what i'm planning goes without hitches. lots and lots of analysis. (i'm what you'd call a business analyst)