Database Develop

need some math help pls(urgent)

hey everyone i would be greatful to your'll if you could help me in math-geometry...this is slopes and lines
1:line through (-8,-2) and parallel to the line x = 5
2:Line through (-1,3) and parallel to the line 3x + 5y = 15
3:line through (8,0) and perpendicular to the line 3x + 4y = 12
pls give me the solution and the way of solving it
thanx

1st one is easy,...
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Let me remember the rest.

djteotancolis said:
thanx for your help in math but i need to give a answer in number so what should i write?
Click to expand...
Click to collapse
OK,... So the line they gave you was x=5. This is because x IS ALWAYS 5.
So on the line that I've put, the value for y is changing,... but ,... x IS ALWAYS ????
So,......

ddotpatel said:
OK,... So the line they gave you was x=5. This is because x IS ALWAYS 5.
So on the line that I've put, the value for y is changing,... but ,... x IS ALWAYS ????
So,......
Click to expand...
Click to collapse
thats what given in the textbook

we need to find the solution and not the graph

Edit: Y = a(x-x0)+y0 as far as I remember
-------------------------------------
Sent via the XDA Tapatalk App

Im LEADING you to the answer!!!!!!
Answer what I just asked you!!!!!
x IS ALWAYS ???????
x= .........
.
.
.
.
.
.
.
x = -8

ddotpatel said:
Im LEADING you to the answer!!!!!!
Answer what I just asked you!!!!!
x IS ALWAYS ???????
x= .........
.
.
.
.
.
.
.
x = -8
Click to expand...
Click to collapse
oh ok thanx thats for the first one right?
sorry m just a bit tensed that i cant pay proper attention

2:Line through (-1,3) and parallel to the line 3x + 5y = 15
When x=0
3(0) + 5y = 15
5y=15
Y=3
So when x=0,.. y=3 ,...(0,3)
When y=0
3x + 5(0) = 15
3x=15
X=5
So when y=0,.. x=5,.. (5,0)
Plot both on graph, then join the two.

ddotpatel said:
2:Line through (-1,3) and parallel to the line 3x + 5y = 15
When x=0
3(0) + 5y = 15
5y=15
Y=3
So when x=0,.. y=3 ,...(0,3)
When y=0
3x + 5(0) = 15
3x=15
X=5
So when y=0,.. x=5,.. (5,0)
Plot both on graph, then join the two.
Click to expand...
Click to collapse
ok but what solution should i write to the question? we arnt doin drawing of graphs just the writing works

In 2 and 3, first isolate y.
Then take the multiple of x, and use it as a in the function I wrote earlier. x0 and y0 are the coordinates you're given
-------------------------------------
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Legend112 said:
In 2 and 3, first isolate y.
Then take the multiple of x, and use it as a in the function I wrote earlier. x0 and y0 are the coordinates you're given
Click to expand...
Click to collapse
Isolate y,...
5y=15-3x
Y=3 - 3/5x
Is 3/5 the multiple of x to use?
y= 3/5(3/5 -...... WOAH this is getting confusing. Haven't done maths in 10 years!!!

I hate slope, always will. I'd help but, I hate it.

ddotpatel said:
Isolate y,...
5y=15-3x
Y=3 - 3/5x
Is 3/5 the multiple of x to use?
y= 3/5(3/5 -...... WOAH this is getting confusing. Haven't done maths in 10 years!!!
Click to expand...
Click to collapse
i know i'm sitting for two hrs now and these are the last two problems i'm stuck on i just dont get an answer....
thanx for your help and time

tapatalk can't qoute for some reason..
-------------------------------------
Sent via the XDA Tapatalk App

is 2:Line through (-1,3) and parallel to the line 3x + 5y = 15 the full question,... or is it asking for gradient and intersect???
Quick, i wana go sleep,... Its half 2 here!!!

ddotpatel said:
Isolate y,...
5y=15-3x
Y=3 - 3/5x
Is 3/5 the multiple of x to use?
y= 3/5(3/5 -...... WOAH this is getting confusing. Haven't done maths in 10 years!!!
Click to expand...
Click to collapse
Yes but -3/5
-------------------------------------
Sent via the XDA Tapatalk App

ddotpatel said:
is 2:Line through (-1,3) and parallel to the line 3x + 5y = 15 the full question,... or is it asking for gradient and intersect???
Quick, i wana go sleep,... Its half 2 here!!!
Click to expand...
Click to collapse
thats the whole question

Legend112 said:
Yeah the solution for 2 should be:
-3x/5+2.4
-------------------------------------
Sent via the XDA Tapatalk App
Click to expand...
Click to collapse
thanx mate

Niiice,... I can leave you in Legend's capable hands then.
Gnyt!

Show off....

I needed to share with my friends in the off topic section regarding the biggest post number in XDA!!
Sorry if this annoys you but really needed to show this off
Besides it won´t last too much as a 2010 new member is posting like crazy and soon he´ll pass me, but at least I had the Honor to move to second place to our Master Jedi Rudegar
!!!
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heh, are you talking about impaler by chance?
Edit: Nvm just saw your edit
Congrats

EDIT:
Thanks
--------

orb3000 said:
Thanks
--------
Click to expand...
Click to collapse
He resides in the same sub-forum as I do (cdma hero) so I've seen his post count and knew right away lol
Enjoy being top while you can he's on there helping people all the time.

Thanks, I will for sure
Meantime let me go and help ppl
kyouko said:
He resides in the same sub-forum as I do (cdma hero) so I've seen his post count and knew right away lol
Enjoy being top while you can he's on there helping people all the time.
Click to expand...
Click to collapse

Congrats Orb
Enjoy it whilst it lasts
Although notice every body on that list is a Mod ;D

Oh and not one to brag but...
http://dl.dropbox.com/u/11809598/XDA/Random%20****/Picture%201.png

Lol!
Congrats to you too

Okay I know I'm not on top but how the heck should I be able the catch Feeyo???? He doesn't count

Congrats, Itll be hard to catch feeyo considering thats his sight
Lol anyone noticed rudegars interest that may be true

Lol yes, he seems to be away from XDA

macaronymax said:
oh and not one to brag but...
http://dl.dropbox.com/u/11809598/xda/random%20****/picture%201.png
Click to expand...
Click to collapse
i have the same chrome theme!!!! Lol!!!!
!!!!!:d:d

orb3000 said:
Lol yes, he seems to be away from XDA
Click to expand...
Click to collapse
Yes because of some very reasonable (*COUGH* BARKING UP THROAT *COUGH*) mods over at the Hero forum....

Oh and if you'd like to head over to page 12 of that post count list, you will see yours truly lol ... Oh well Xda's 128th highs poster

MacaronyMax said:
Oh and if you'd like to head over to page 12 of that post count list, you will see yours truly lol ... Oh well Xda's 128th highs poster
Click to expand...
Click to collapse
Poo!!! I thought you only had about 900 posts!!!
Im sure at some time in the last 3 weeks i was chuffed cause i had more posts than you
Bloody hell!
Doesn't time fly when your flashing roms!

flyboyovyick said:
Poo!!! I thought you only had about 900 posts!!!
Im sure at some time in the last 3 weeks i was chuffed cause i had more posts than you
Bloody hell!
Doesn't time fly when your flashing roms!
Click to expand...
Click to collapse
Haha, yes doesn't it , you probably did btw
In Jan my post per day was about 0.1 lol and now it's 2.5

MacaronyMax said:
Haha, yes doesn't it , you probably did btw
In Jan my post per day was about 0.1 lol and now it's 2.5
Click to expand...
Click to collapse
LOL! My post rate when i first joined was very high (i think) then it went pretty low. Now ive got my gt540 im posting a bit more.

I was one of the top 5 posters on Benfolds.org back in the day!

There is a member with a post rate of 30 posts per day

only few words for you : STOP SPAMMING XDA

The Official "Nerdom Revealed" Thread: Unleash your Inner Nerd

Here's a place to showcase the nerd that you are. The rules are simple: post something only a fellow nerd would know. This is for the real nerd in all of us.
Type your simple words or phrase with details would not be identifiable to the public at large. Whoever can answer your clue with the with what it relates to gets to post the next item of intrigue.
For example, if I type DE_Rats as the clue, only a consummate nerd would answer: Counter-Strike
I'll begin with something relatively easy, but still quite nerdy: Mana burn

Arf, I had to google it to know
WoW
Your two exemples were more gamer oriented than just nerds ^^
I'll continues however : 42.

m1l4droid said:
The answer to life.
That was easy.
Click to expand...
Click to collapse
Hum... Almost ^^
Answer to the Ultimate Question of Life, the Universe, and Everything
Continue

Sine. said:
Arf, I had to google it to know
WoW
Your two exemples were more gamer oriented than just nerds ^^
I'll continues however : 42.
Click to expand...
Click to collapse
The game may continue with the dragon question, but this answer was incorrect
WoW didn't exist until long after what I'm referring to, though it still exists now.

F**K YOU NOTCH! That CREEPER blew up ma house! My dirt house!
Sent from my Xperia PLAY™ using XDA Premium!

m1l4droid said:
OK, now this:
Where do we see a dragon killed by one arrow?
Click to expand...
Click to collapse
The Hobbit
Next: "Game Over. The User Wins." An entire sector of the grid is destroyed. Not Tron.

Mana burn
Magic
10 HOME
20 SWEET
30 GO TO 10

What does Darth Vader say to Luke?

LordManhattan said:
What does Darth Vader say to Luke?
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Let's get this back on track with an easy one.
"We want... a shrubbery!!!!!!"

MissionImprobable said:
Let's get this back on track with an easy one.
"We want... a shrubbery!!!!!!"
Click to expand...
Click to collapse
boborone said:
Mana burn
Magic
10 HOME
20 SWEET
30 GO TO 10
Click to expand...
Click to collapse
nobody confirmed my mana anwer or answered mine

boborone said:
nobody confirmed my mana anwer or answered mine
Click to expand...
Click to collapse
Yes, Magic is correct.
I had to google to get the answer to yours, so I won't cheat by answering

MissionImprobable said:
Yes, Magic is correct.
I had to google to get the answer to yours, so I won't cheat by answering
Click to expand...
Click to collapse
It's one of the thousands of nerdom gems from a great show.
And I played Magic back in the day, even played it on XBOX the other day, quite boring, all the decks are preset for you. BORING

Here's an easy one for you before I go get some sleep.
What are the 10 types of people in the world?

m1l4droid said:
No, I'm your father.
Click to expand...
Click to collapse
Good boy! Here's a cookie!
Sent from my GT-N7000 using xda premium

MissionImprobable said:
Let's get this back on track with an easy one.
"We want... a shrubbery!!!!!!"
Click to expand...
Click to collapse
Monty Python And The Holy Grail.
Sent from my GT-N7000 using xda premium

Archer said:
Here's an easy one for you before I go get some sleep.
What are the 10 types of people in the world?
Click to expand...
Click to collapse
Those who understand binary, and those who don't. Boya!
Sent from my GT-N7000 using xda premium

Those who undestand it and those not
(Skiping my turn as I hasn't correctly answered last time...)
Edit : arf, grilled by another nerd
Reedit : Whoa, triple posts, you're "en forme" tonight! ^^

Yeah i know. I posted those from me phøn, so things like that happens.
My turn again: What's the distance of one AU? DO NOT GOOGLE!

Meh, I don't know the distance of one standard astronomical unit off-hand so I'm gonna veto your clue =p
Next: "Congratulations, you are the Moon Master."
"How surprisingly delightful. Two moon masters in one house; what are the chances?"

.9999999999 = 1?

Someone explain that to me
Sent from my PG86100 using xda app-developers app

Well it will only equal one if you are rounding up to the nearest whole number! Other wise it obviously is itself.
sent from my dx2 w/paranoid android

Uhh, no? 0.999999 is 0.999999 not 1...
Sent from my premium potato

Go into the calculator, type in .9999999999 (ten 9's) and hit equals. My friend was telling me about how it equals 1, he learned it in pre-calc today or something
Sent from my PG86100 using xda app-developers app

Its close enough for government work

Yes, there's some skewed logic that makes .999 repeating equal 1. I'll have to look in my calc book and find it.
Sent from my Nexus 7 using Tapatalk 2

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beneath-a-burning-turtle said:
Go into the calculator, type in .9999999999 (ten 9's) and hit equals. My friend was telling me about how it equals 1, he learned it in pre-calc today or something
Click to expand...
Click to collapse
says "nope"

beneath-a-burning-turtle said:
Go into the calculator, type in .9999999999 (ten 9's) and hit equals. My friend was telling me about how it equals 1, he learned it in pre-calc today or something
Sent from my PG86100 using xda app-developers app
Click to expand...
Click to collapse
Or better yet.
58008 = Boobs.
Somebody explain the math for that.

Here's the mathematical proof.
That's the version that makes the most sense to me but there's tons more here
---------- Post added at 03:59 PM ---------- Previous post was at 03:57 PM ----------
063_XOBX said:
Or better yet.
58008 = Boobs.
Somebody explain the math for that.
Click to expand...
Click to collapse
0.1134

beneath-a-burning-turtle said:
Go into the calculator, type in .9999999999 (ten 9's) and hit equals. My friend was telling me about how it equals 1, he learned it in pre-calc today or something
Sent from my PG86100 using xda app-developers app
Click to expand...
Click to collapse
Actually its nine 9's

And here's another explanation.

m1l4droid said:
Guys, I'm happy for you, and Ima let you finish, but .9999...=1 is only approximate.
Click to expand...
Click to collapse
Did you even read the two links I provided?

Is 0.9999999999 = 1?
No. The clue is in the question.
Mathematicians make assumptions, and this is a classic case of that. They're saying, "It's so close to 1 that we may as well call it that." I'd love to see the mathematician that agrees with the thread title working for NASA and calculating safety measures for rockets. (Actually I wouldn't because it would mean people would likely die!)

It's because your calculator wants to output numbers beginning with a whole integer. 0.999 instead of .999. So it cuts off the last digit and rounds with it. 9 is greater than 5 and so it rounds up. Then carries the addition over to make it 1.
Does that make sense without having to go into great detail? Once you get into advanced mathematics, you need to learn how all the different types of calculators are programmed to operate. Cause you learn you can't trust them because of problems like the one you are using. So you learn some don't follow order of operation, some round off the last digit, some cut it off.
It's why I always liked programming my formulas and theorems in cpp and getting the answers that way with the libraries that we made in my group.

Archer said:
Is 0.9999999999 = 1?
No. The clue is in the question.
Mathematicians make assumptions, and this is a classic case of that. They're saying, "It's so close to 1 that we may as well call it that." I'd love to see the mathematician that agrees with the thread title working for NASA and calculating safety measures for rockets. (Actually I wouldn't because it would mean people would likely die!)
Click to expand...
Click to collapse
No. 0.999... or .9999 repeating is equal to 1.

veeman said:
No. 0.999... or .9999 repeating is equal to 1.
Click to expand...
Click to collapse
Ummmmmmm..........................
No.jpg

707 + 707 = 1414

1>0.999999999, but the approximation is close.
It depends on what you're working on. If you were building a part for an aircraft and needed accuracy to be +/- .0001, it's the same. However, if I ordered to trade to $0.999999999 x 10^15 for $1.00 x 10^15, you'd be getting ripped off.

boborone said:
It's because your calculator wants to output numbers beginning with a whole integer. 0.999 instead of .999. So it cuts off the last digit and rounds with it. 9 is greater than 5 and so it rounds up. Then carries the addition over to make it 1.
Does that make sense without having to go into great detail? Once you get into advanced mathematics, you need to learn how all the different types of calculators are programmed to operate. Cause you learn you can't trust them because of problems like the one you are using. So you learn some don't follow order of operation, some round off the last digit, some cut it off.
It's why I always liked programming my formulas and theorems in cpp and getting the answers that way with the libraries that we made in my group.
Click to expand...
Click to collapse
An easy test to figure out if your calculator rounds the last digit or cuts it off is to do 10÷6. Is the last digit a 6 or a 7. If it's 6, it cuts off, 7 it rounds off.

Nexus 7 32GB - request to run Androbench

Would any body lucky enough to have picked up a new Nexus 7 32 GB, please run the Androbench benchmark on it, I'm curious to see if they have improved i/o performance.
Thanks

Same as the others
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styckx said:
Same as the others
Click to expand...
Click to collapse
OK, thanks, so is the model number still C90?

I am starting to think they've had this model for a while and didn't want to sell it right away.

Turbotab said:
OK, thanks, so is the model number still C90?
Click to expand...
Click to collapse
Yeah, it's C90 - build date is early Sept, which is why it was running 4.1.1 out of the box.

computingwarren said:
I am starting to think they've had this model for a while and didn't want to sell it right away.
Click to expand...
Click to collapse
I wouldn't say ready, as in stuck in a warehouse, but they probably had option clauses in the contract to supply a 32 GB model, if certain conditions were met, price / QA / stocks levels of older devices etc.

Yes it's a C9O which means Sept build date.. My 16GB was a C8O and 100% perfect, and this 32GB is also 100% perfect.. No lift, no creeking, no dead pixels... Notta.
Edit: I See JohhnyHempSeed beat me to it. I had the reply window open for a bit

styckx said:
Yes it's a C9O which means Sept build date.. My 16GB was a C8O and 100% perfect, and this 32GB is also 100% perfect.. No lift, no creeking, no dead pixels... Notta.
Edit: I See JohhnyHempSeed beat me to it. I had the reply window open for a bit
Click to expand...
Click to collapse
haha, we have the same case too man :good:

see if the camera does 720p

heat361 said:
see if the camera does 720p
Click to expand...
Click to collapse
It doesn't - I used the 720p mod.

styckx said:
Yes it's a C9O which means Sept build date.. My 16GB was a C8O and 100% perfect, and this 32GB is also 100% perfect.. No lift, no creeking, no dead pixels... Notta.
Edit: I See JohhnyHempSeed beat me to it. I had the reply window open for a bit
Click to expand...
Click to collapse
Sounds like little ol' Nexus is ready to take on the iFad mini, this forum is going to get messy post Christmas with all the new noob owners, refusing to use the search button.

Turbotab said:
Sounds like little ol' Nexus is ready to take on the iFad mini, this forum is going to get messy post Christmas with all the new noob owners, refusing to use the search button.
Click to expand...
Click to collapse
Eh.. I don't mind new users.. I was new, you were new, everyone was new once and more than likey ( I know I did ) asked a million dumb questions.. Hell, I still ask the random dumb question now and then. :laugh: Android is a constant learning process.
Help a new user out today and he could be the guy (or girl) developing your next ROM tomorrow (figuratively speaking).

styckx said:
Eh.. I don't mind new users.. I was new, you were new, everyone was new once and more than likey ( I know I did ) asked a million dumb questions.. Hell, I still ask the random dumb question now and then. :laugh: Android is a constant learning process.
Help a new user out today and he could be the guy (or girl) developing your next ROM tomorrow (figuratively speaking).
Click to expand...
Click to collapse
Didn't want to seem that I would not help any newcomers, I'd be happy to help, but when people don't do a little searching before asking a question, it does them a disservice.

Turbotab said:
Didn't want to seem that I would not help any newcomers, I'd be happy to help, but when people don't do a little searching before asking a question, it does them a disservice.
Click to expand...
Click to collapse
Gotcha, and completely agree. :good:

A little faster
styckx said:
Same as the others
Click to expand...
Click to collapse
I seem to have gotten a little faster. This is the 32GB + 3g model - after the 4.2 update, and then I did a factory reset. Took the benchmark before anything else was installed.
I guess I can't post a link as I haven't posted enough.
Image can be seen here: "www(dot)fearthepenguin(dot)net" at "/pics/misc/Nexus7-32gb-3g-benchmark.jpg"
# Micro-benchmark
Target: /data (ext4)
Use Buffer: No
SEQ RD: 26.28 MB/s
SEQ WR: 12.15 MB/s
RND RD: 1953.88 IOPS(4K)
RND WR: 145.82 IOPS(4K)
#SQLite benchmark
Insert: 51.06 TPS
Update: 58.83 TPS
Delete: 60.86 TPS
#Macro Benchmark
Target: /data (ext4)
Browser: 137.25 msec
Market: 268.25 msec
Camera: 305.75 msec
Camcorder: 751.5 msec

JohnnyHempseed said:
haha, we have the same case too man :good:
Click to expand...
Click to collapse
What case is that? Mine has straps over the corners of the nexus and I hate it!