Science & Mathematics - 19 January 2007

Why is it that after all these millions of years, the centre of the Earth is still molten? Why isn’t the energy source exhausted?

2007-01-19 06:57:32 · 5 answers · asked by Anonymous in Earth Sciences & Geology

Use a paragraph proof to prove triangle CAT is congruent to triangle DOG.

Given:
angle A = 10x+2
angle O = 5x+12
angle C = 13x-10
angle D = 2x+12
CT=3x+7 and DG=x+11.

Please help! I'd really appreciate it!

2007-01-19 06:57:07 · 2 answers · asked by Kasumi-san 1 in Mathematics

2007-01-19 06:56:41 · 6 answers · asked by karl s 1 in Medicine

im 18 and im so dumb cause i find doing simple maths like timesing and dividing hard.my bf i was on the phone to him set me a simple maths question and i couldnt even work out how to do it.my bf so smart i cant see why hes dating a dumbo like me.i have always struggled at maths realy badly.in maths class cause im re taking my gcse maths and english cause i got E in maths and a D and a E in english and i need a c grade,but in class i couldnt do mental maths and i so upset that i couldnt do it,im dyslexic.i feel like giving up on maths,what else could i do to try inprove.

2007-01-19 06:56:40 · 26 answers · asked by Anonymous in Mathematics

2007-01-19 06:55:43 · 3 answers · asked by C 2 in Zoology

2007-01-19 06:53:31 · 10 answers · asked by Anonymous in Geography

2007-01-19 06:53:01 · 5 answers · asked by mark w 1 in Mathematics

Mechanical Advantage of a seesaw? Use your own ratios and measurements. I'm NOT cheating I swear it.

2007-01-19 06:52:48 · 1 answers · asked by Anonymous in Mathematics

also what would u see and how do u test this gas

2007-01-19 06:51:49 · 6 answers · asked by Random111 1 in Chemistry

Adding and Subtracting Fractions Help PLease!!!

1. n/ n-2 - 3n-1/n-2

2.5b+2 / 8 + 3b-4/10

3. Find the perimeter of a rectangle
length = 3a + 6/4
width = 2a-1/ 6


THANKS AGAIN!!!

2007-01-19 06:46:36 · 5 answers · asked by Anonymous in Mathematics

2007-01-19 06:45:51 · 6 answers · asked by Anonymous in Weather

2007-01-19 06:45:13 · 18 answers · asked by Anonymous in Astronomy & Space

Calculus question- please help!!!!

2007-01-19 06:45:07 · 5 answers · asked by warmestpartofthewinter 1 in Mathematics

The main reason why anyone will not accept evolution is because they are not educated in the discoveries made from cell biology for the last century. Is this true?

2007-01-19 06:42:25 · 7 answers · asked by beboe007 1 in Biology

what qualities a developing mammal has to make it a foetus,it's specific features

2007-01-19 06:38:51 · 8 answers · asked by Juliet B 1 in Biology

im wondering if the following functions are onto or not...surjective

f(m,n)=2m - n
f(m,n)=m^2 - n^2
f(m,n)=m+n+1
f(m,n)= |m| + |n|
f(m,n)= m^2 - 4

2007-01-19 06:38:30 · 5 answers · asked by Anonymous in Mathematics

i cant know what to take in engineering?
what is better?
i like computer courses,math and circuits
i dont like physics

2007-01-19 06:37:54 · 9 answers · asked by Anonymous in Engineering

2007-01-19 06:37:44 · 7 answers · asked by Random111 1 in Chemistry

A. density-dependent
B. density-independent
C. within
D. an S-shape curve
E. a J-shape curve

2007-01-19 06:36:48 · 5 answers · asked by rubaty2004 1 in Biology

If so what was your last reading please?

2007-01-19 06:36:44 · 4 answers · asked by Linda 6 in Medicine

i am making a wind turbine, tomorow i have to make the rotor blades, does anyone know the degree of angle needed to turn the alternator, i've done lots of research into wind turbines but theres not much info on the rotor blades, this will be a mk11 version as i have made one before, the one i made before had soil pipe rotor blades but these were not powerfull enough to turn the turbine whilst connected to an alternater,although it turnedthe shaft etc without the alternater connected

2007-01-19 06:35:53 · 4 answers · asked by chris p 3 in Engineering

its like...16 x 1/3 x 3.14 x r^2? but um...the whole 1/3 part confuses me!

2007-01-19 06:35:39 · 11 answers · asked by baby 2 in Mathematics

2007-01-19 06:33:04 · 11 answers · asked by Anonymous in Astronomy & Space

Say you stick your arm out the window of an airplane in the winter time. At certain speeds your arm will get colder faster from the wind chill. But at what speed of the airplane will the air moving across your arm actually begin to warm your arm?

2007-01-19 06:33:01 · 1 answers · asked by Jason 1 in Physics

2007-01-19 06:32:33 · 6 answers · asked by newmummy2000 2 in Zoology

If the basis of all measurement of matter and energy is the speed of light, as referenced in the equation E=mc2, including time, then can it be said that the mind is not subject to time? Mind travels faster than the speed of light.

2007-01-19 06:32:01 · 9 answers · asked by Anonymous in Astronomy & Space

2007-01-19 06:29:53 · 4 answers · asked by alicia 1 in Biology

A yahoo answer said the only hole in mathematics is godels theorm . THis author proves godels theorm is self contradictory and in fact proved that mathematics is inconsistent or self-contradictory and not what mathematician have said he proved ie the impossiblity proof . These demonstrations this author shows that mathematics is at a very fundamental level meaningless and self-contradictory

http://gamahucherpress.yellowgum.com/gamahucher_press_catalogue.htm

2007-01-19 06:27:46 · 5 answers · asked by Anonymous in Mathematics

2007-01-19 06:27:46 · 20 answers · asked by deshawnna d 1 in Geography

2007-01-19 06:27:40 · 7 answers · asked by Random111 1 in Chemistry