Science & Mathematics - 7 January 2007

Where are you?

2007-01-07 03:51:40 · 9 answers · asked by JACQUELINE T 6 in Weather

2007-01-07 03:50:49 · 13 answers · asked by Anonymous in Mathematics

a house is 25 X 70 how do you calculate square feet.

2007-01-07 03:48:04 · 3 answers · asked by oljohncamp 1 in Mathematics

2007-01-07 03:47:53 · 2 answers · asked by January 1 in Earth Sciences & Geology

64, 58, 52, 46, ...
6, 12, 24, 48, 96, ...
6, 9, 13.5, 20.25, 30.375, ...
60, 30, 15, 7.5, 3.75, ...
Which sequence shows a linear realtionship?

2007-01-07 03:46:55 · 5 answers · asked by Anonymous in Mathematics

I need a microscope power to see bacteria grown in petri dishes ...do you need a special microscope, or will a regular one do?

2007-01-07 03:43:39 · 5 answers · asked by SJ9867 3 in Biology

2007-01-07 03:43:34 · 12 answers · asked by Anonymous in Mathematics

2007-01-07 03:42:42 · 46 answers · asked by Ciaran S 1 in Zoology

2007-01-07 03:42:31 · 15 answers · asked by Johnny L 1 in Zoology

why is that the scientists always look for oxygen,water in other planets?
can there be any other type of life system different from ours i.e a life system not based on oxygen.is it possible??
our universe have billions of planets,i dont think these are just barren land.
Many UFO sightings have been reported.there must be aliens outthere sending probes in some other galaxy.
Recently i saw a video in CNN about a UFO sightings in US in 50's.many says that it was designed by humans?i dont think that somebody can deign a circular craft.At that time aviation was not that developed 4 someone 2 design something like that?

2007-01-07 03:40:23 · 22 answers · asked by Anonymous in Astronomy & Space

x/x-1+1=1/x-1

I solved this I think but having trouble seeing if it works. Here is what I have:

X/X-1+1=1/X-1
MULTIP BY THE LCD (x-1)
(x-1)(x/x-1)+1(x-1)=(x-1)(1/x-1)
x+1(x-1)=1
x-1x=1
x=1

to check I used 1 in place of x
1/1-1+1=1/1-1

is this correct or is there no solution?

2007-01-07 03:37:21 · 10 answers · asked by mpwife4ever7678 1 in Mathematics

2007-01-07 03:33:40 · 20 answers · asked by stunkout35 2 in Astronomy & Space

this is a question in my daughters homework. we thought she had correct answer but it was marked wrong. anyone help?

2007-01-07 03:32:37 · 8 answers · asked by Hunny bunny 3 in Other - Science

Find the ratio of the area of circle to square.

2007-01-07 03:25:18 · 12 answers · asked by Vijay Gupta 2 in Mathematics

an observer is 1.5 miles from the launch area of a hot air baloon. soon after lift-off he measures the angle of elevation to the hot air baloon to be 37 degrees . How high is the shuttle at that instant ?
Round to three decimal places


plzz show me work and answer



From a point on a cliff 100 feet above water level an observer can see a ship. the angle of depression to the **** is 10 degrees. how far is the ship from the base of the cliff. tound to three decimal places.



When an airplane leaves the runway, its angle of climb is 18 degress and its speed is 30 FEET PER SECOND and the altitude of the plane after 2 minutes . Round the to three decimal places


plzz give answers and show work

2007-01-07 03:24:47 · 3 answers · asked by dojorno5 2 in Mathematics

2007-01-07 03:23:48 · 7 answers · asked by Anonymous in Zoology

2007-01-07 03:23:01 · 6 answers · asked by smoabayomi 1 in Biology

2007-01-07 03:22:54 · 7 answers · asked by Teresa A 1 in Mathematics

2007-01-07 03:20:29 · 3 answers · asked by Teresa A 1 in Mathematics

2007-01-07 03:20:10 · 2 answers · asked by Nazlino 1 in Mathematics

cos(beta) = -sqrt 2 / sqrt 3, pi/2 < beta < pi therefore making it lie in quadrant 2.

cos(beta/2)= +/- sqrt (1 + cos(beta)) / (2)

i know i have to plug in the numbers and find a common denominator, in the end i got...

sqrt (sqrt 3 + - sqrt 2) / (2 sqrt 3)

but how do find out if it's suppose to be a positive or negative answer? thanks for the help.

2007-01-07 03:17:26 · 2 answers · asked by shih rips 6 in Mathematics

2007-01-07 03:17:02 · 1 answers · asked by Padmaja S 2 in Mathematics

How would you know based on the information?

Also, Sulfur-48 has 48 protons and 16 electrons. How would you calculate the number of neutrons based on that?

Any help would be much appreciated.

2007-01-07 03:14:45 · 5 answers · asked by Tiffany 3 in Chemistry

2x^2 - 9y^2 = 17
2(3y + 4)^2 - 9y^2 = 17
9y^2 + 48y + 15 = 0
3y^2 + 16y + 5 = 0
3y^2 + 15y + y + 5 = 0
3y(y +5) + 1(y + 5) = 0
(y + 5)(3y + 1) = 0
y = -5 and y = -1/3

x = 3y + 4
y = -5, x = - 11
y = -1/3, x = 3
The answer is correct, i just have to figure out the workings

2007-01-07 03:11:32 · 2 answers · asked by Lorraine T 1 in Mathematics

Can someone identify the purpose of my science fair project? My project is on water and bacteria, what i did was i put 3 bottles of water into a freezer, refridgerator and in room temperature for 24 hours, then i tested to see which water was most purified, the one in the freezer, the one in the refridgerator or the one in room temperature. I think i have the purpose, but i want to see what yall think.

2007-01-07 03:07:26 · 3 answers · asked by HELLO123 3 in Biology

2007-01-07 03:04:35 · 7 answers · asked by BlackIce Mikel 3 in Mathematics

I am waiting for answer.

2007-01-07 03:02:39 · 2 answers · asked by Naved A 1 in Engineering

2007-01-07 03:02:31 · 2 answers · asked by rad s 1 in Mathematics

2007-01-07 03:02:28 · 13 answers · asked by akshit 1 in Mathematics

Doctors only pls....career questions?
I am pursuing a career as as doctor, and am currently in the interview/acceptance phase of medical school application.

I need some help and guidance in my decision, and have several questions I would like to ask about the process of becoming a doctor:


1. What school did you attend, and what is your field of medicine? What was your undergrad degree in?


2. How far in debt were you after med school, and how long did it take to pay off your student loans?


3. How long did it take for you to go through med school and finish residency? How old were you?


4. Was it worth the time/money spent to pursue the career, and is there anything you would do differently if you had it to do over again?


5. In your opinion, does it really matter all that much which med school you get your degree from??


That's all I have for now. Thanks in advance for your answers!

2007-01-07 03:01:11 · 2 answers · asked by John 3 in Medicine