Science & Mathematics - 4 September 2007

What is this answer to this its really hard!
What is the nth term of this sequence?
1/3, 1/4, 1/5, 1/6
help greatly appreciated

2007-09-04 05:54:10 · 5 answers · asked by mkanda_008 2 in Mathematics

2007-09-04 05:52:42 · 3 answers · asked by thomas w 1 in Mathematics

if you know the slope is 1/4 and the y-intercept is 0

2007-09-04 05:50:19 · 4 answers · asked by manly b 1 in Mathematics

2007-09-04 05:50:09 · 4 answers · asked by leontaurus 2 in Weather

My math packet asks me to solve the quadratic equation for x by factoring and i don't know how.

Here are some of the questions:
1. 6x^2 + 3x = 0
2. x^2 - 2x - 8 = 0
3. x^2 + 10x + 25 = 0

Can someone explain this to me, thanks.

2007-09-04 05:48:33 · 5 answers · asked by AJ B 1 in Mathematics

The city B is 120 miles down the river from city A.
The speed of water flow in the river is 6mph.

How long does it take to sail from A to B in absence of wind?

2007-09-04 05:45:45 · 4 answers · asked by Alexander 6 in Physics

I'm trying to trying to work out the mean average age based on the data from a survey when the ages are ranged. The ages are ranged 16 - 21, 22 - 26, 27 - 32 etc.

So for example 4 respondents where aged between 16-21, 7 between 22-26 and 12 between 27-32.

Does anyone know how to do this? I know how to work out the mean, but how do you do it when the data is presented like this?

Thanks!

2007-09-04 05:45:35 · 5 answers · asked by Anonymous in Mathematics

the fiance would like to know

2007-09-04 05:44:40 · 13 answers · asked by Anonymous in Zoology

Information began to spread one day in a city with a population of 100,000. Within 7 days, 10,000 heard about the information.
Assume that the rate of increase of the number who have heard the rumor is proportional to the number who have not yet heard it. How long will it be until half the population of the city has heard the rumor?

A=Ce^kt

THANKS SO MUCH! :)

2007-09-04 05:43:39 · 1 answers · asked by stackinchips11 2 in Mathematics

2007-09-04 05:38:04 · 7 answers · asked by crunch 1 in Zoology

* gravity
* acceleration
* inertia
* action/reaction

2007-09-04 05:37:46 · 5 answers · asked by Amanda 1 in Physics

hey can someone tell me how to find the are of a trapezoid and a circle please?
=] thnakss. and im sorta a blonde so dony use * i dont know what they mean just use X for multiple and for divide use /

love,
sexii lexiii ♥

2007-09-04 05:33:25 · 4 answers · asked by Anonymous in Mathematics

I think I've hit a big spot in my backyard where a stream is flowing down these gold nuggets . ? I need to know how to tell from Gold from Pyrite?

If it is I think I maybe rich .. $_$

2007-09-04 05:32:19 · 4 answers · asked by Anonymous in Earth Sciences & Geology

Suppose that H2O (liquid) goes from 29°C and 1 atm to 31.0°C and P_2. What value of P_2 would make ∆S=0 for this process? State any approximations made.

2007-09-04 05:30:39 · 1 answers · asked by g2hn 3 in Engineering

i want to use it to trap this freaking mosquitos.

2007-09-04 05:29:34 · 9 answers · asked by Rodolfo R 2 in Chemistry

I hope some of you could help me. The acid already stained my cookie sheet. I already left it for about three weeks now. Can I use water and baking soda ?

2007-09-04 05:27:10 · 3 answers · asked by Anonymous in Chemistry

sphere of influence (Geography)?
Im doing a essay for A-level on the sphere of influence on East Croydon train station (south London Surrey) Any help as to how to measure the sphere, what the sphere is, why is the sphere on East Croydon so big, how to gather and present data that kind of thing.

2007-09-04 05:25:32 · 4 answers · asked by Anonymous in Geography

I have two answers which one is right which one is wrong???

find all the values of x


/x-3/=12

x=15
x=-15
x=9
x=-9

or


/x-3/=12

x=12
x=-12


Which one is right?

2007-09-04 05:25:09 · 6 answers · asked by rocker chick 2 in Mathematics

2007-09-04 05:23:50 · 5 answers · asked by Anonymous in Mathematics

Explain how you found the answer.

2007-09-04 05:23:37 · 2 answers · asked by JoeSchmo 1 in Chemistry

Looking back on high school stuff, I crossed 1 easy looking problem that I can't solve


here it is


if ax+b=3 and a cannot equal 0, then x= ?

2007-09-04 05:20:29 · 9 answers · asked by rocker chick 2 in Mathematics

2007-09-04 05:19:19 · 6 answers · asked by Anonymous in Biology

2007-09-04 05:17:37 · 11 answers · asked by shawna 2 in Mathematics

I would like to also know if what is the proper process in clearing my pan. Is water an option ? Soap perhaps ?

2007-09-04 05:17:30 · 2 answers · asked by Anonymous in Chemistry

If Universe is created by some million year old technical civilization or whether it got created by itself , i think everything got created from EMPTINESS , emptiness became so dense that it actually caused material elementary particles to be created which evolved with time . What do you think ? Then question can be asked that what caused the emptiness to become dense , so many questions ...

2007-09-04 05:16:00 · 7 answers · asked by Devil 4 in Physics

I asked a Q's and then gave a little tutorial as I ussually do, this bothers people for some reason. I'm somewhat at a loss as to why I hear its to long and there are mistake's, I would like to think that its ussually a good read, but I might be a little to enambered with myself. Anyway it's been my experience that christians are'nt on the same page when it comes to evolution, and I'm used to that. But when I mentioned missing links such as Erectus,Habilus,Lucy,Goliath, and other humans such as Neandethal and the Hobbits the evolution crowd indicated I might be full of it. Well, unless I'm going to believe in the whole Satan is in those scientists and there lying, (crowd) I have on good authority, that scientists discovered a human species on th Island of Flores in Indonesia.They are decendants of Erectus, who then were isolated on the island and dwarfism set in, they evolved to half the size of Erectus. I throw this Q's here for obvious reason's. Have you heard about them,(plural)?

2007-09-04 05:15:31 · 3 answers · asked by wakemovement 3 in Biology

what are the advantages of having a pretest whan conducting a questionair that has closed questions

2007-09-04 05:15:10 · 1 answers · asked by jimp1174 1 in Mathematics

got confused?
huuuuuuuummmmmm

2007-09-04 05:14:12 · 24 answers · asked by karam 1 in Engineering

in terms of something quantifiable like football pitches. i have an idea of the size of a football pitch but can't imagine 5000 acres or 20,234,282.112 m2

2007-09-04 05:10:06 · 9 answers · asked by Stephen M 6 in Mathematics

are they still around on ehat number can i contact one? have you ever any experiences of ringing one?

2007-09-04 05:09:37 · 9 answers · asked by luvin_me_4_me 5 in Parapsychology