Science & Mathematics - 3 August 2007

an equilateral triangle with sides 10cm is divided into two regions by a line segment parallel to one of the sides.

a) if the regions have equal areas, determine the length of the line segment.

b) create two other problems that are suggested by this one. then solve each problem.

okay so i figured the height of the big triangle to be 8.7cm. and the area is 43cm squared. This means the area of the small triangle should be 21.7cm squared.

im stuck here... any help is appreciated. thanx alot . for the second part i have no idea so if u can help thanx :)

2007-08-03 07:43:00 · 3 answers · asked by moooona1987 2 in Mathematics

other to earth ( Not neutral ). As per law, electrons will continue the closed path, through neutral. pls explain

2007-08-03 07:40:02 · 9 answers · asked by A E 1 in Engineering

I know their is a standard notation for pointing into the page and coming out of the page. I believe into the page is X and coming out of the page is 0. Is that correct??

2007-08-03 07:39:26 · 4 answers · asked by borgerm 2 in Engineering

2007-08-03 07:37:08 · 7 answers · asked by micheal t 1 in Mathematics

2007-08-03 07:35:25 · 4 answers · asked by micheal t 1 in Mathematics

Is it true that the ocean is salty because whales ejaculate in it?

2007-08-03 07:34:36 · 15 answers · asked by teenster 3 in Zoology

Solve. [(1/x+5)+2]=[5/x+5]
I am lost on how to do this. thanks

2007-08-03 07:33:32 · 4 answers · asked by Anonymous in Mathematics

If there are parallel universes and such and one can only be conscious in one then are there people in this universe who aren't consciously here?

2007-08-03 07:31:15 · 8 answers · asked by Anonymous in Physics

I'm stuck on this math problem can u help I'm bad with quadratic formula

use the quadratic formula to solve this equation

x^2 +5x-14=0

2007-08-03 07:29:59 · 5 answers · asked by Anonymous in Mathematics

create another dinosaur because about 5 months ago my dad told me scientists found a mosquito which had dinosaur blood in it and more stuff but i forgot does anyone have the story.Or a video?

2007-08-03 07:26:33 · 7 answers · asked by The Game 3 in Biology

2007-08-03 07:26:31 · 10 answers · asked by Anonymous in Other - Science

2007-08-03 07:25:00 · 10 answers · asked by snoopdogg71832 1 in Astronomy & Space

and by quantum theory it is also said that a photon also have particle nature .Then tell me that between the two orbits at what point the particle nature photon will emmit .If it emmit at the level of higher orbit then the e should come to lower one with infinit speed but it is not possible then if it emmit at the level of lower one but it seems foolish and continous desipation of energy is a classic idea.

2007-08-03 07:23:30 · 5 answers · asked by ubaid ur rehman 1 in Physics

Simplify each complex fraction.

(3) / (5y) + 8

-----------------
( 3) / (5y) - 8

2007-08-03 07:21:50 · 6 answers · asked by Anonymous in Mathematics

It is desired to double the efficiency of a Carnot heat engine from 30% by raising its temperature of heat addition, while keeping the temperature of heat rejection constant. What percent increase in high temperature is required?

2007-08-03 07:18:38 · 1 answers · asked by wcr98 1 in Engineering

x^2+3y^3 +4y^2-6/3.5=5y^2-y^3-4x^2-25/8

2007-08-03 07:14:57 · 16 answers · asked by Anonymous in Mathematics

Like aliens or human beings that live in another galaxies planet???

2007-08-03 07:14:13 · 14 answers · asked by Anonymous in Astronomy & Space

One thing that has always intrigued me about the rings of Saturn ISN'T the seven rings around it but the clear, uniform spaces IN-BETWEEN those rings! It would seem as though all rings would form into one big ring. What is it that keeps clear spaces between the rings?

2007-08-03 07:12:04 · 4 answers · asked by theNakedEye 3 in Astronomy & Space

Suppose we move 9 times further from a star. How many times fainter will it appear?

2007-08-03 07:10:36 · 5 answers · asked by dothedip 1 in Astronomy & Space

How did they know what animal the bones belonged to?

2007-08-03 07:09:04 · 2 answers · asked by sir_zacatetas 1 in Earth Sciences & Geology

Im supposed to use 'u' to integrate this

integrate from [0,4] x / sqrt(1-2x)

2007-08-03 07:09:00 · 7 answers · asked by rock it ! 1 in Mathematics

2007-08-03 07:07:13 · 10 answers · asked by .♥Blessed.and.Highly.favored♥. 2 in Mathematics

here in grand bay al, right on the gulf coast it is so hot and humid you just cannot go outside. too hot when you wake up and hot when the sun goes down. at least no hurricanes in sight.

2007-08-03 07:05:54 · 8 answers · asked by deborah l 2 in Weather

the projected rate of sales of zfones in the UK will initiallly be 50000 per month. it is projected that sales will double every two months as production and distribution improve. the product will be launched on 1 august 2007. assuming that the market grows as projected calculate...

1) the rate of sales at the end of december 2007

2) the date when sales reach a rate of 1500000 per month

2007-08-03 07:03:42 · 2 answers · asked by paul j 1 in Mathematics

I watched some weird documentary on it... something about there are actually 2 parallel universes and where they end they are like.. wiggly!?! and when the wiggles hit eachother they cause a "big bang"
this means
there are probably an infinite number of universes, and big bangs happen all the time.
here is the link to the documentary:

http://www.tv-links.co.uk/listings/9/5239

tell me your thoughts and if someone could summarize that in like.. "parallel universe for dummies" form. Half of it i didnt understand but it reallly interested me!

2007-08-03 07:02:35 · 7 answers · asked by Anonymous in Astronomy & Space

A car is traveling at a constant speed of 30 m/s passes a highway patrol police car which is at rest. The police officer accelerates at a constant rate of 3.0 m/s^2 and maintains this rate of acceleration until he pulls next to the speeding car. Assume that the polic car starts to move at the moment the speeder passes his car. Determine the (a) time required for the police officer to catch the speeder and (b) distance traveled during the chase.

I tried using the equation deltat = (Vf-Vi)/a but, apparently, it's wrong...>.<

2007-08-03 07:01:06 · 2 answers · asked by sara.girl122 1 in Physics

The cost of the purple pipe is greater and I know that the color distinguishes it as a grey water conduit as opposed to potable. Is there a chemical difference to the composition of the pipe?

2007-08-03 07:00:36 · 3 answers · asked by Anonymous in Engineering

consider a mountain that is essentially in the shape of a right circular cone. suppose that the right density of the material in the vicinity of a point P in g(P) and the height is h(P)

2007-08-03 07:00:33 · 1 answers · asked by mr. man 1 in Engineering

2007-08-03 06:58:16 · 11 answers · asked by Anonymous in Astronomy & Space

2007-08-03 06:57:22 · 10 answers · asked by Anonymous in Astronomy & Space