

05272007, 01:29 PM

#11

Golden Master
Join Date: Oct 2006
Posts: 6,928

Re: maths problem
Quote:
Originally Posted by ThePower
lol(This lol thing is getting an automatic reaction for me) im doing gcse and that looks so confusing.........
just off topic but in ict anyone chose CIDA, I did but i think it's kind of pointless really.

omfg i hat that subject it is evil , i chose dida at first as our school had this stupid idea we where gonna get four of the spb's done and yet we only got 2 done , and cos out it teachers marked it the marks where awarded for what they liked and how they interpreted the spb which is realy annoying , also i feel pur school failed us cos our teacher had no clue cos we where the first year he had taght this to so he had no clue at all so i wouldnt choose it given the chance again
also i only got 2 b's yet in year 9 my it teacher told me i could get an A or A* at gcse it yet doing this wonderfull dida course i only got 2 b's
Quote:
Originally Posted by dude_se
i was in the top group in maths (well one of the top ones, except i didnt have to do statistics) and i found it easy, maybe thats just me lol. i dunno what happened.
i just did an as level in ict and my friend did an as in electronics. both are ok but i found that our retarded teachers made the lessons pretty pointless.
anyway i still cant figure it out

i was gonna pick a level ict but when i went to my college open day i realised it was jst the same as i had studied for gcse and it all looked easy so i choose computing instead which is programming
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05272007, 02:15 PM

#12

Golden Master
Join Date: Nov 2004
Posts: 8,632

Re: maths problem
Quote:
Originally Posted by freestyler105

thats made it a bit clearer. although ive given up for the night so ill try tomorrow. i thought i had to use log's but i wasnt sure.
good job. i cant rep you though
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05272007, 04:54 PM

#13

Site Team
Join Date: Mar 2005
Posts: 13,081

Re: maths problem
X=275X10 (0.018t)
That gives...2000=275(0.18t
2000=49.5t
2000 divided by 49.5 will equal T
T=40.40
Right?



05272007, 05:05 PM

#14

Golden Master
Join Date: Nov 2004
Posts: 8,632

Re: maths problem
omg that was close. its apparently 47.8... so you just multiplied the 0.018 by 10 then put it over the 275? to give you 2000=275^0.18t? then you multiplied 275 by 0.18 which gave you 49.5? which would give 2000=49.5t. which then leads to t=40.4. it seems to make sense but whys it getting the wrong answer
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05272007, 05:38 PM

#15

BSOD
Join Date: Apr 2005
Posts: 6,556

Re: maths problem
i plugged it into a graphing caclulator's equation solver and its out of range
i belive there may be no solution because it is a quadratic equation.
maybee try graphing it or making it equal to zero and using the quadratic equation



05272007, 05:40 PM

#16

BSOD
Join Date: Apr 2005
Posts: 6,556

Re: maths problem
Quote:
Originally Posted by lhuser
X=275X10 (0.018t)
That gives...2000=275(0.18t
2000=49.5t
2000 divided by 49.5 will equal T
T=40.40
Right?

you wrote it down wrong it is 10 to the power of .018t



05272007, 05:42 PM

#17

Golden Master
Join Date: Nov 2004
Posts: 8,632

Re: maths problem
i think Ihusers got the right kind of method but it just isnt spot on lol. maybe i should try using log's
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05272007, 06:14 PM

#18

Site Team
Join Date: Sep 2006
Posts: 10,674

Re: maths problem
I did the same exact problem about 2 months ago (that is one you can't forget). I have my math notebook here at home, when i finally decide to open it to do my homework (tonight or tomarrow) i'll look see if i can find the problem.
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05272007, 06:24 PM

#19

Golden Master
Join Date: Nov 2004
Posts: 8,632

Re: maths problem
Quote:
Originally Posted by celegorm
I did the same exact problem about 2 months ago (that is one you can't forget). I have my math notebook here at home, when i finally decide to open it to do my homework (tonight or tomarrow) i'll look see if i can find the problem.

cheers m8. its gone midnight so ill try ihusers method tomorrow
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05272007, 07:36 PM

#20

Golden Master
Join Date: Mar 2006
Posts: 5,574

Re: maths problem
it is definatly logarithms.
edit
you will first get: log[base 10](2000/255)=.018t
then: 0.89448=.018t
then finally: t=49.69387
(gotta love windows calculator...)
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