Island Off-Topic "Must you always talk about cars?" Not in here.
For other things in life.. |
 |
01-17-2009, 01:14 PM
|
#1
|
|
Need to Seek Professional Help
Join Date: Jan 2003
Location: Colwood
Posts: 1,026
Thanked 0 Times in 0 Posts
Failed 0 Times in 0 Posts
|
Math help
IS anyone here good at this stuff.
i have 3 questions to due. And was wondering if anyone could give me a hand.
1. A circle has x intercepts at A(1,0) and B(5,0) and its center lies on the line y = 4. Determine the equation of this circle?.
2. Find the points of intersection between the circle (x - 3)2+ (y-1)2 = 5 and the line y = 2x -2
3. Find the shortest distance between the point P(6,5) and the line 3x+4y=24.
any help would be awesome.
thank you.
__________________
Rebuilt
and faster, more powerful than before
|
|
|
|
01-17-2009, 02:13 PM
|
#2
|
|
My homepage has been set to RS
Join Date: Jan 2002
Location: The woods
Posts: 2,131
Thanked 0 Times in 0 Posts
Failed 9 Times in 1 Post
|
i would say brown
__________________
Formerly Club-Integra's Van. Island Coordinator
BCAS Paramedic - Chemainus Station
91 Acura Integra RS - Sold
90 Toyota SR5 4x4 ext Cab
|
|
|
|
|
01-17-2009, 02:43 PM
|
#3
|
|
No Duplicate Accounts Allowed
Join Date: Oct 2005
Location: Victoria, BC
Posts: 521
Thanked 3 Times in 3 Posts
Failed 0 Times in 0 Posts
|
Quote:
Originally Posted by sIN
IS anyone here good at this stuff.
i have 3 questions to due. And was wondering if anyone could give me a hand.
1. A circle has x intercepts at A(1,0) and B(5,0) and its center lies on the line y = 4. Determine the equation of this circle?.
2. Find the points of intersection between the circle (x - 3)2+ (y-1)2 = 5 and the line y = 2x -2
3. Find the shortest distance between the point P(6,5) and the line 3x+4y=24.
any help would be awesome.
thank you.
|
Grade 12 stuff? I would do it for you if I had some paper in front of me. And it might involve some multi-variable vector calculus. But those questions are easy! C'mon now.
|
|
|
|
|
01-17-2009, 02:47 PM
|
#4
|
|
OMGWTFBBQ is a common word I say everyday
Join Date: May 2004
Location: Toronto
Posts: 5,038
Thanked 512 Times in 96 Posts
Failed 96 Times in 11 Posts
|
6.2
__________________
My Flickr
Quote:
Originally Posted by MelonBoy
really?.. some reason im afraid of taking shits after ghost movies.. i always think about what if a ghost's hand came out of the toilet and grabbed my nuts or stuck its hand in my ass -___________-.... i mean if it came outa the mirror id have reaction time to run but the toilets.. thats a pretty good blind spot to sneak up on people from -_____- ...
|
|
|
|
|
|
01-17-2009, 06:37 PM
|
#5
|
|
I answer every Emotion with an emoticon
Join Date: Dec 2003
Location: Langvista
Posts: 7,936
Thanked 73 Times in 19 Posts
Failed 2 Times in 2 Posts
|
Quote:
Originally Posted by mr_baboon
Grade 12 stuff? I would do it for you if I had some paper in front of me. And it might involve some multi-variable vector calculus. But those questions are easy! C'mon now.
|
Hey man, some of us had a hard time with Grade 12 Calc. It's not as hard as driving a MKIII Supra though, I hear that's really hard 
__________________
Time flies like an arrow. Fruit flies like a banana.
|
|
|
|
|
01-17-2009, 06:51 PM
|
#6
|
|
B&S Sexy mod
Join Date: Jun 2005
Location: Victoria
Posts: 7,522
Thanked 12 Times in 7 Posts
Failed 0 Times in 0 Posts
|
i guess i shoudl probably brush up on that stuff for sept 
|
|
|
|
|
01-17-2009, 07:59 PM
|
#7
|
|
NOOB, Not Quite a Regular!
Join Date: Jan 2009
Location: vancouver
Posts: 38
Thanked 0 Times in 0 Posts
Failed 19 Times in 7 Posts
|
#1.
you know that the coordinate of the middle is (x,4)
(x - h)^2 + (y - k)^2 = r^2
in this equation you know that h and k is the coordinate of the midpoint of the circle..
(x - h)^2 + (y - 4)^2 = r^2
ok and you also know that on the circle exists coordinates (1,0)...and (5,0)
you need to plug in these 2 coordinates into the equation separately and you'll get 2 linear equatoins
(1 - h)^2 + (0 - 4)^2 = r^2
(5 - h)^2 + (0 - 4)^2 = r^2
subract these 2 equations from 1 another...
(1-h)^2 - (5-h)^2 = 0
(1-h)(1-h) - (5-h)(5-h) = 0
1-2h+h - (25-10h+h)=0
1-2h+h-25+10h-h=0
8h-24=0
h= 24/8 = 3
so u know the midpoint is (3,4)
ok so plug in this midpoint again back into your circle equation
(x - 3)^2 + (y - 4)^2 = r^2
and plug in (1,0) into this equation and solve for r.... (you can also plug in (5,0), or any other coordinate that exists on the circle)
(1 - 3)^2 + (0 - 4)^2 = r^2
4+16= r^2
r= sqrt(20)
final answer...
(x - 3)^2 + (y - 4)^2 = 20
Last edited by WingHang; 01-17-2009 at 08:03 PM.
Reason: not quite done.
|
|
|
|
|
01-17-2009, 10:35 PM
|
#8
|
|
Need to Seek Professional Help
Join Date: Jan 2003
Location: Colwood
Posts: 1,026
Thanked 0 Times in 0 Posts
Failed 0 Times in 0 Posts
|
thank you
__________________
Rebuilt
and faster, more powerful than before
|
|
|
|
|
01-18-2009, 08:49 AM
|
#9
|
|
Willing to sell body for a few minutes on RS
Join Date: Mar 2002
Location: Victoria
Posts: 10,939
Thanked 5,584 Times in 2,056 Posts
Failed 188 Times in 103 Posts
|
You know,
After I graduated from post sec. I have never needed to find the equation of a circle who's center lies on the line y=4 and has intercepts of A(1,0) and B(5,0). It just hasn't come up.
__________________
1968 Mustang Coupe
2008.5 Mazdaspeed 3
1997 GMC Sonoma ZR2
2014 F150 5.0L XTR 4x4
A vehicle for all occasions
|
|
|
|
|
01-18-2009, 09:23 AM
|
#10
|
|
I answer every Emotion with an emoticon
Join Date: Dec 2003
Location: Langvista
Posts: 7,936
Thanked 73 Times in 19 Posts
Failed 2 Times in 2 Posts
|
Quote:
Originally Posted by Great68
You know,
After I graduated from post sec. I have never needed to find the equation of a circle who's center lies on the line y=4 and has intercepts of A(1,0) and B(5,0). It just hasn't come up.
|
Maybe if you became a rocket surgeon?
__________________
Time flies like an arrow. Fruit flies like a banana.
|
|
|
|
|
01-18-2009, 10:20 AM
|
#11
|
|
RS.net, helping ugly ppl have sex since 2001
Join Date: Sep 2008
Location: Vancouver
Posts: 8,858
Thanked 2,420 Times in 669 Posts
Failed 530 Times in 136 Posts
|
must be calculating the radius of the cross section of a rocket........
|
|
|
|
|
01-18-2009, 12:16 PM
|
#12
|
|
Even when im right, revscene.net is still right!
Join Date: Apr 2004
Location: Da Island mon!
Posts: 1,310
Thanked 1 Time in 1 Post
Failed 0 Times in 0 Posts
|
Likewise... about the only post secondary math I've ever used is Discrete (binary, logic) and Newton's method.
Now, some of our programmers do lots of "fun" math all the time, but they're not in the department I run.
__________________
2002 GMC Envoy SLT - Mmm... Heated leather.
2000 Chevrolet Cavalier Z24 - The built, bottled, and extremely obnoxious race car err lawn ornament.
2003 Saturn Ion-2 Sedan - Wife's daily driver.
1965 Chevrolet Nova SS - BBC powered gasser in the making.
1963 Acadian Beaumont Convertible - My silver on red baby.
|
|
|
|
|
01-18-2009, 01:51 PM
|
#13
|
|
No Duplicate Accounts Allowed
Join Date: Oct 2005
Location: Victoria, BC
Posts: 521
Thanked 3 Times in 3 Posts
Failed 0 Times in 0 Posts
|
Quote:
Originally Posted by Black SC2
Hey man, some of us had a hard time with Grade 12 Calc. It's not as hard as driving a MKIII Supra though, I hear that's really hard |
Deep cut Christian  But I guess I totally deserve it. Hahaha.
|
|
|
|
|
01-18-2009, 04:33 PM
|
#14
|
|
Need to Seek Professional Help
Join Date: Jan 2003
Location: Colwood
Posts: 1,026
Thanked 0 Times in 0 Posts
Failed 0 Times in 0 Posts
|
hey thanks for your help. it is greatly appreciated.
__________________
Rebuilt
and faster, more powerful than before
|
|
|
|
|
01-18-2009, 05:35 PM
|
#15
|
|
RS.net, helping ugly ppl have sex since 2001
Join Date: Feb 2002
Location: Vancouver
Posts: 8,421
Thanked 4,042 Times in 1,563 Posts
Failed 35 Times in 27 Posts
|
I use simple trig all the time. But I wouldn't have a clue how to do this. Maybe if I really sat down and looked at it for an hour with paper and a calculator.
__________________
Crush - 1971 Datsun 240z - Build Thread
The Daily - Rav4 V6 - “Goldilocks”
|
|
|
|
|
01-18-2009, 06:27 PM
|
#16
|
|
Sick motherfucker mod
Join Date: Mar 2002
Location: Victoria
Posts: 9,084
Thanked 56 Times in 40 Posts
Failed 0 Times in 0 Posts
|
WingHang +1 respect
__________________
Quote:
Originally posted by stevo911_
In this part of the world, the italian, the darkie, and the perv have total control.... scary eh?
|
|
|
|
|
|
01-18-2009, 09:49 PM
|
#17
|
|
Willing to sell body for a few minutes on RS
Join Date: Mar 2002
Location: computer
Posts: 11,089
Thanked 154 Times in 40 Posts
Failed 398 Times in 41 Posts
|
mathamacation is the proper word for every thing when it comes to this type of stuff
__________________
The Mad Scientist reinventing the wheel every day
92 Toyota supra highly modified (The ice cream will never have a chance to melt)
89 exo cage Toyota truck (so many gears to choose from)
I own nothing that is practical hahahaha
|
|
|
|
|
01-18-2009, 10:26 PM
|
#18
|
|
Proud to be called a RS Regular!
Join Date: Dec 2007
Location: Vancouver
Posts: 144
Thanked 53 Times in 10 Posts
Failed 4 Times in 1 Post
|
lol couldn't find help in the Vancouver Board, had to come here? 
|
|
|
|
|
01-19-2009, 07:32 AM
|
#19
|
|
Rs has made me the man i am today!
Join Date: Apr 2001
Location: Victoria
Posts: 3,336
Thanked 2 Times in 2 Posts
Failed 0 Times in 0 Posts
|
Quote:
Originally Posted by laureate
lol couldn't find help in the Vancouver Board, had to come here? |
Less chance someone here would rat on him for cheating?
As you may be able to tell, I am not a fan of someone posting their school work to get someone else to do it.
__________________
*2003 White Ford F350SD XLT Crew Cab Diesel
*1972 Ford Gran Torino Sport (351C)
Last edited by sixthgear; 01-19-2009 at 08:05 AM.
|
|
|
|
|
01-19-2009, 05:16 PM
|
#20
|
|
I answer every Emotion with an emoticon
Join Date: Dec 2003
Location: Langvista
Posts: 7,936
Thanked 73 Times in 19 Posts
Failed 2 Times in 2 Posts
|
Quote:
Originally Posted by laureate
lol couldn't find help in the Vancouver Board, had to come here? |
This thread was started before the one on the Van side.
__________________
Time flies like an arrow. Fruit flies like a banana.
|
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -8. The time now is 09:38 PM.
|
You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
The banners on the left side and below do not show for registered users!
