Science & Mathematics - 15 August 2007

thanks

2007-08-15 02:31:07 · 7 answers · asked by xah8 1 in Mathematics

i know no law of pysics can describe this but any ideas on what there was before the big bang

2007-08-15 02:28:11 · 19 answers · asked by awds74 1 in Astronomy & Space

1. What are the lengths of the segments into which the y-axis divides the segment joining (-6,-6) and (3,6)?

2. Find the lengths of the medians of the triangle whose vertices are (3,13), (-1,6) and (8,-7).

3. Find the centroid of a triangle whose vertices are(-2,8), (-6,4) and (-1,5).

thanks

2007-08-15 02:26:34 · 1 answers · asked by xah8 1 in Mathematics

like when you go higher it gets colder. For example, outside an aeroplane or on mount Everest
*i thought the sun was hot..?*
any ideas?

2007-08-15 02:26:14 · 8 answers · asked by ... 4 in Physics

1/3 x - 1/6y = 1/3


1/6x + 1/4y = 0

2007-08-15 02:26:06 · 4 answers · asked by dianajiminez 1 in Mathematics

2,64,8120601,.........

i dont like this kind of serieses so i composed it by my own.

2007-08-15 02:20:17 · 3 answers · asked by Abdullah 2 in Mathematics

2007-08-15 02:15:52 · 2 answers · asked by Anonymous in Mathematics

I know the steel is rated high yield (HY) 80 or 100 thousands of pounds per square inch, but how thick is it? I assume it must be pretty thick, so how do they bend and weld it?

2007-08-15 02:09:09 · 3 answers · asked by Jonathan P 1 in Engineering

plz help!!

2007-08-15 01:48:13 · 6 answers · asked by ka2 3 in Mathematics

INSISTING that an earthquake caused the collapse of the mine when siesmotologists say that there was no quake at all? Did they missed a quake in their readings?

2007-08-15 01:29:56 · 3 answers · asked by jacquie 6 in Earth Sciences & Geology

how long before the actual "sunrise" does the sky start to get a tad bit lighter?

2007-08-15 01:27:54 · 6 answers · asked by happy_go_luckyGirl 1 in Weather

ans shpuldnt relate with genes or genetics

2007-08-15 01:26:22 · 1 answers · asked by Anonymous in Medicine

The line x – y = 3 intersects the curve x^2 - 3xy + y^2 + 19 = 0 at P and Q.
Find the coordinates of P and Q.

2007-08-15 01:25:21 · 4 answers · asked by Cheers! 1 in Mathematics

2007-08-15 01:25:10 · 13 answers · asked by ajk6405 2 in Astronomy & Space

a) sodium hexacyanoferate(III)
b) triaquatrinitrotitanium(IV)nitrate
c) potassium diaquabis(oxalato)chromate(II)

2007-08-15 01:23:06 · 2 answers · asked by Anonymous in Chemistry

Find the value of p and of q for which x^2 - 3x -4 is a factor of 2x^3 - px^2 - 5x + q

2007-08-15 01:21:24 · 2 answers · asked by Cheers! 1 in Mathematics

The area of a rectangle is [12+ (30 over square root 3)] m2. Given that the length is m, find, without the use of a calculator, find the perimeter of the rectangle.

2007-08-15 01:12:51 · 6 answers · asked by Cheers! 1 in Mathematics

Even miniscule amounts must never come into contact with matter and must be stored in a permanently suspended state. So it seems the more that's created the more difficult it becomes us to store without "human error" potentially obliterating the planet.

2007-08-15 01:11:11 · 4 answers · asked by i2planet 2 in Physics

Please would you help me with these questions. I don't mind if you can do all of it, some of it or just one-any amount of help will be really appreciated. i promise

1.In this question, a and b are numbers where a=b + 2
The sum of a and b is equal to the product of a and b
show that a and b are not integers

2.show that (4x10^8) x (8x10^4) = 3.2 x 10^13

3.what is (4x10^8) / (8x10^4) write answer in standard form

4.Here is information about a data set.
"There are 100 values in the set
The median is 90
The mean is 95"
i increase the highest value in the data set by 200. Now what are the median and the mean of the data set?

5.solve these simultaneous equations using an algebrating method
4x + 3y =21
2x + y = 8
show working


thanks, it's a bit of holiday homework, it was a whole 50 question booklet, i only missed out these so i really appreciate if you help me on just these few.however if you think it is wrong helping me then please don't be cruel.

2007-08-15 01:10:18 · 12 answers · asked by Anonymous in Mathematics

We r using CI for conc in our batching plant. The CI cames in Plastic storage drum. From few days the drums are blasting one by one.
Anybody can tell the reason? My ID is p.maji@rediffmail.com

2007-08-15 01:07:35 · 1 answers · asked by Prasenjit M 1 in Engineering

Write the equation of a line in standard form (Ax+By=C) given the following:

a) passing through (-7,5) and parallel to the x-axis

b) passing through (5,-8) and perpendicular to the x-axis


Thank you in advance.

2007-08-15 01:06:27 · 3 answers · asked by Anonymous in Mathematics

2007-08-15 00:44:53 · 13 answers · asked by cukie 1 in Physics

2007-08-15 00:39:59 · 1 answers · asked by Anonymous in Botany

Hey, I have this equation, in slope-intercept form it's -2 = -3(-1) + b

how do I convert that to standard form?!

2007-08-15 00:32:41 · 3 answers · asked by Anonymous in Mathematics

have they always been bigger, stronger than Lions?, cause I've heard of some extinct Lion sub-species, such as the Barbary Lion, the Cape Lion. Also the North American Lion, which existed thousands of years ago, like towards the end of the Ice Age, was bigger than todays African Lions, but was it bigger than todays Siberian Tigers?, I know today in the present Tigers are the biggest of all cats, but has it been that way throughout time?

2007-08-15 00:25:43 · 2 answers · asked by introvertedguy06 6 in Zoology

Does it mean there is a 60% chance of the forcast rain occuring or does it mean that it will rain for 60% of the day?

2007-08-15 00:23:18 · 11 answers · asked by James S 2 in Weather

2007-08-15 00:17:32 · 3 answers · asked by Donald A 1 in Chemistry

2007-08-15 00:12:27 · 4 answers · asked by Anonymous in Weather

For each question below, find zw and z/w. Leave your answer in polar form.

NOTE: d = degrees. Okay?

(1) z = cos120d + isin120d; w = cos100d + isin100d

(2) z = 4(cos(3pi/8) + isin(3pi/8));
w = 2(cos(9pi/16) + isin(9pi/16))

2007-08-15 00:11:48 · 1 answers · asked by journey 1 in Mathematics

2007-08-15 00:10:04 · 7 answers · asked by ♥Come Break Me Down♥ 2 in Biology