avatar
Guest
Login | Sign Up
banner_jpg
Username/Email: Password:
Manga Poll
What is the most striking aspect of great character art?
Clothing
Accessories
Body / Figure
Eyes, face, or hair
Art line work
Colors
 
See Old Polls

Manga is the Japanese equivalent of comics
with a unique style and following. Join the revolution! Read some manga today!

Join #baka-updates @irc.irchighway.net

RSS Feed
 
Forums
Main Index | New Posts ( all ) | Search Forums

Homework Help

Back to Chatter Box
Pages (26) [ First ... 4 5 6 7 8 9 10 Last ] Next
You must be registered to post!
From User
Message Body
Post #346518
user avatar
 Member

12:23 pm, Jan 5 2010
Posts: 2038


Edit: I was wrong, asnwers are 1 and 7.

(x-4)^2=9

x^2-8x+16=9
x^2-8x+7=0
x1= 1
x2= 7

You can also do (it's simpler):

(x-4)^2=9
square root of both
(x-4)=+3 AND (x-4)=-3
x=3+4 AND x=-3+4
x=7 AND x=1

Last edited by reid1 at 12:36 pm, Jan 5 2010

________________
What I like in Trivial Pursuit style. Pick your category:User Posted Image
Post #346521 - Reply to (#346515) by Dragonfiremule
user avatar
Mad With a Hat
Member

12:28 pm, Jan 5 2010
Posts: 4764


Quote from Dragonfiremule
Quote from NightSwan
NP.
I like the algebra I can solve.
I think I screwed up there though.
It's -7, -1
^^;;;;

The 7 is correct, but I don't know about the -1.

-1^2 - 8(-1) +7 = 0

1 + 8 + 7 =/= 0

A regular 1 works though.

1 + -8 + 7 = 0 biggrin

Unless you do the opposite? I can't remember...


Oh what a lol I am.
Been a while, I guess. (I mean, I completely blacked out for a moment there and it all went to hell- forgot the thingie that turns the minus)


Yep, I'm an idiot. :3

Anyways, I can do equations (sometimes), but I have no idea what you actually need.
smile



________________
Hrodulf and Bjornolfr, you will not be forgotten.
User Posted Image
And if the world were black and white,
you would be my rainbow in shades of grey.

Click 'n Play!

If I had a fantasy self, it'd be a tentacle monster.
Post #346539
user avatar
Member

2:51 pm, Jan 5 2010
Posts: 3120


(x-4)^2 = 9
x-4 = +/-3
x = 4 +/-3
x = 7, 1

Gah, everyone beat me to it.

Post #346543 - Reply to (#346539) by Sagaris
user avatar
Is a female
 Member

3:14 pm, Jan 5 2010
Posts: 3457


Quote from Sagaris
(x-4)^2 = 9
x-4 = +/-3
x = 4 +/-3
x = 7, 1

Gah, everyone beat me to it.


Everyone beat you to it hours ago! XD

You made it seem like you were close or something laugh

Unless you were being sarcastic of course...

Post #346544 - Reply to (#346543) by tactics
user avatar
Mad With a Hat
Member

3:20 pm, Jan 5 2010
Posts: 4764


Quote from tactics
Quote from Sagaris
(x-4)^2 = 9
x-4 = +/-3
x = 4 +/-3
x = 7, 1

Gah, everyone beat me to it.


Everyone beat you to it hours ago! XD

You made it seem like you were close or something laugh

Unless you were being sarcastic of course...


At least he got it right. laugh

________________
Hrodulf and Bjornolfr, you will not be forgotten.
User Posted Image
And if the world were black and white,
you would be my rainbow in shades of grey.

Click 'n Play!

If I had a fantasy self, it'd be a tentacle monster.
Post #346561
user avatar
Member

4:25 pm, Jan 5 2010
Posts: 1668

Warn: Banned



If all else fails and you need those roots, then use the quadratic equation
http://mathworld.wolfram.com/QuadraticEquation.html


this shows you how to solve it

http://www.youtube.com/watch?v=EeVqtpuMFOU


PS. if you buy a TI-89, it contains features that solve quadratic equations for you.

Last edited by BoxBox at 5:00 pm, Jan 5 2010

________________
Gay book discussion thread
Quote from you_no_see_me_
this is not about cannibalism...please get back on topic

Quote from Toto
I think it is exactly the topic. I see nothing wrong.
Post #346617
user avatar
Site Admin

7:56 pm, Jan 5 2010
Posts: 2275


both answers are positive
All you need to do is plug the answers back into the problem to verify.



Edit: I have a tendency to not check if there's another page.

________________
"Officially, this machine doesn't exist, you didn't get it from me,
and I don't know you. Make sure it doesn't leave the building."
Post #346620 - Reply to (#346544) by NightSwan
user avatar
Member

8:02 pm, Jan 5 2010
Posts: 3120


Quote from NightSwan
Quote from tactics
Everyone beat you to it hours ago! XD

You made it seem like you were close or something laugh

Unless you were being sarcastic of course...


At least he got it right. laugh

I was on the 6th page and for some reason, I thought it was last post.

Post #347000
user avatar
Wall-o-text
Member

1:58 pm, Jan 7 2010
Posts: 367


Need help on a few questions on process engineering.

A distillation column is set up containing A and B. the feed to the column enters at 5000kg/h and is in a 1:1 ratio. The top stream out of the distillation column is sent to a condenser at a rate of 3500kg/h. at the condenser A is taken out and separated into a product stream and a recycle stream. The product stream from the condenser contains 95% A. the bottoms stream contains 90% B. Find the ratio of recycle to product at top.

I've started with a mass balance of A around the condenser but I ended up with 50% of A going to the top and 50% of A going to the bottom which was weird since it says that 90% of the bottom is B.

A mixture of acetic acid, water and benzene is continually distilled, the first two components being fed at a ratio of 4 to 1 by weight. Two product streams leave the column. The top product composition by weight is 10.9% acetic acid, 21.7% water and 67.4% benzene. If the bottom product is purer acetic acid, flowing at a rate of 1.75kg/s, calculate the rate of flow of the feed into the still and its composition by weight and the flow rate of the top product.

This one I don't know where to start >.<

________________
Do not feed the trolls
User Posted Image
Post #348710
user avatar
Member

9:40 pm, Jan 11 2010
Posts: 327


Is there a term for chemicals getting dumped back into where everyone gets them from (like after they go into a container)? I'm going to use "backwash" at the moment but that doesn't sound too scientific.

Post #348715 - Reply to (#348710) by azureblueinfinite
user avatar
Member

10:01 pm, Jan 11 2010
Posts: 3120


Quote from azureblueinfinite
Is there a term for chemicals getting dumped back into where everyone gets them from (like after they go into a container)? I'm going to use "backwash" at the moment but that doesn't sound too scientific.

Something you're never supposed to do?

Post #348721 - Reply to (#348715) by Sagaris
user avatar
Member

10:27 pm, Jan 11 2010
Posts: 327


Quote from Sagaris
Quote from azureblueinfinite
Is there a term for chemicals getting dumped back into where everyone gets them from (like after they go into a container)? I'm going to use "backwash" at the moment but that doesn't sound too scientific.

Something you're never supposed to do?

Well, how about when complaining other people do it and saying it's pertinent to error?

Post #348723 - Reply to (#348721) by azureblueinfinite
user avatar
Member

10:33 pm, Jan 11 2010
Posts: 3120


Quote from azureblueinfinite
Well, how about when complaining other people do it and saying it's pertinent to error?

Just say the [insert name of what ever material] was likely contaminated due to improper lab procedure or conduct.

Post #349721
user avatar
Member

6:53 am, Jan 15 2010
Posts: 1705


Sorry, but I kinda need this in an hour or so... I apologize for being so rushed. ^_^;;

Anyway, this is for Biology 12. I just did this lab in extracting DNA from bananas and now am doing the follow-up questions:

1. Why was banana used?
2. What other vegetables could be used for this and why?
3. If bacterial cells were being used, could the same process be used to extract the DNA?

________________
User Posted Image
Post #349722
user avatar
 Moderator

7:02 am, Jan 15 2010
Posts: 9026


^ that's too fast~ I have no clue at all, but I searched for a sec.

The soft flesh of a banana provides a ready source of DNA?

Other related links:

1
2

Sorry. :'[

________________
source: animenewsnetwork

Join SRoMU Scanlations or visit #SRoMU at IRCHighWay.
Pages (26) [ First ... 4 5 6 7 8 9 10 Last ] Next
You must be registered to post!

Back to Chatter Box  Back to Top

 
 
Search
Advanced Search