Science & Mathematics - 6 November 2006

The price of a telephone was first increased by 10 percent and then the price was decreased by 25 percent. The final price was what percent of the initial price?.
how do you solve that question. I know that the answer is 82.5% but I don't know the way to solve it.
please explain it to me like I'm 9 years old.
thanks in advance.

2006-11-06 10:22:41 · 5 answers · asked by Anonymous in Mathematics

2006-11-06 10:22:24 · 2 answers · asked by shahab a 1 in Botany

2006-11-06 10:22:05 · 3 answers · asked by Anonymous in Zoology

can you tell me the name of these formulas please and how you did that? my niece need help
CaCO3

KCL

FeSO4

LiBr

MgCL2

Zn3(PO4)2

NH4NO3

AL(OH)3

CuC2H3O2

PbSO3

NaCLO3

CaC2o4

Fe2O3

(NH4)3PO4

Hg2CL2

Mg(NO2)2

CuSO4

NaHCO3

NiBr3

Be(NO3)2

ZnSO4

AuCL3

KMnO4

2006-11-06 10:21:35 · 8 answers · asked by Anonymous in Chemistry

I know it's possible to slow light down in a medium to a point where you can see it moving. However, the speed of light remaind 3x108... what's really going on?

2006-11-06 10:21:32 · 4 answers · asked by interested_party 4 in Physics

2006-11-06 10:21:12 · 6 answers · asked by Krzysztof F 2 in Mathematics

This is for a science project.

2006-11-06 10:20:00 · 4 answers · asked by Anonymous in Earth Sciences & Geology

P = 657 torr

n = 2.82 moles

T = 283.8 oC

Enter a numeric answer only, do not include units.

we have to round to three sig. figs, and i tried .149 and .148 as answers, but it didnt work..any suggestions? thanks!!

2006-11-06 10:19:36 · 1 answers · asked by nietzsche 1 in Chemistry

out of Mercury,Venus,Earth,Mars,Jupiter,Saturn,Uranus,Neptune and Pluto

2006-11-06 10:18:07 · 40 answers · asked by nartnamron 2 in Astronomy & Space

What are the formulas for these compunds??

1-ammonium hydroxide
2-lead(II) oxide
3-potassium bromide
4-phosphorus pentachloride
5-aluminum nitrate
6-barium phosphate
7-tetracarbon dechahydride
8-tin(IV) hydroxide
9-ammonium nitrate
10-lithium phosphide


PLEASE AND THANKS

2006-11-06 10:14:42 · 3 answers · asked by anonymous 1 in Chemistry

Carefully balance an embroidery hoop vertically on the mouth of a narrow-mouth bottle. Stack the nuts on the top of the hoop. The idea is to get as many nuts as possible into the bottle by touching the hoop with only one hand..

my friends and i did that and LUCKILY we beat the class and got 10 in the bottle w/out dropping one...

I have to write a CONCLUSION and I'M CLUELESS.. How does this deal with inertia.. i got how my 6 other ones did but not this..



MUCHOS GRACIAS.. GOD BLESS :)

2006-11-06 10:14:37 · 1 answers · asked by Anonymous in Physics

Homework Help?
Solve for n:

L= a + (n-1)d

2006-11-06 10:13:16 · 5 answers · asked by Anonymous in Mathematics

Simplify the expression to either 1 or -1

2006-11-06 10:10:31 · 2 answers · asked by Chrystal D 1 in Mathematics

Ignoring attenuation by the Earth's atmosphere, how far out along the beam will the beam be travelling tangentially at the speed of light? Beyond this distance along the beam, will it be travelling tangentially faster than the speed of light? Remember, I am not refering to the speed radially, along the beam, but rather tangentially as it rotates. Also, please ignore the speed of rotation of the Earth, I am only interested in the rotation of the beam.

2006-11-06 10:10:18 · 4 answers · asked by Mez 6 in Physics

Grandpa Chuck is a coin collecter. And he had to divide his coins amoung his 4 grandchildren.
1/2 goes to the oldest
1/4 goes to the middle oldest
1/5 goes to the middle youngest
the remaining 49 coind go to the youngest

how many coins are there in all

please help me could you possibley explain how u came up with it
i will chose a best answer

2006-11-06 10:09:33 · 7 answers · asked by Anonymous in Mathematics

I took chemistry and some physics. I can do calculations concerning waves, but I don't understand what waves are conceptually. Can anyone help? It would be greatly appreciated.

2006-11-06 10:08:53 · 6 answers · asked by ecogrl23 2 in Physics

2006-11-06 10:08:30 · 11 answers · asked by Aaron A 5 in Geography

2006-11-06 10:07:53 · 2 answers · asked by Anonymous in Chemistry

i have the following info:

mass is .011 kg

radius is .12 m

period is 1.8 s/rev

Fn=.108

How do I calculate Ff with this info?

2006-11-06 10:05:40 · 1 answers · asked by Anonymous in Physics

I like the concept of heating only the room being used. I have a space heater but am not satisfied with it's performance. I've read promotional litearture on the quartz infrared portable heaters and I like what I hear. It sounds like just what I'm looking for. Any information, pro or con would be greatly appreciated

2006-11-06 10:05:17 · 4 answers · asked by ffrankon1 1 in Engineering

what is the purpose of an exhaust system expansion tank and yes im a student

2006-11-06 10:05:17 · 7 answers · asked by Anonymous in Mathematics

you use a earpiece and a microphone and talk to your tutor live 1 on 1

2006-11-06 10:04:48 · 2 answers · asked by babycake808 1 in Mathematics

each time the Earth orbits the Sun on an ever decreasing path! I am not a religous person but does it not mention in the Bible that the next time the Earth ends it will be by fire!!

2006-11-06 10:00:57 · 27 answers · asked by deeky_ward 3 in Astronomy & Space

What is an irrational number?

2006-11-06 09:59:14 · 8 answers · asked by mochaspice16 1 in Mathematics

I want a snake,but i have to get a small,nice,affordable,non-poisonus snake.

2006-11-06 09:59:01 · 5 answers · asked by Lolo Lenore 1 in Zoology

2006-11-06 09:57:04 · 2 answers · asked by S 1 in Botany

What does it do? What's its job? What helps it do its job?

2006-11-06 09:56:48 · 6 answers · asked by Chris 2 in Biology

1. Discuss or explain the role of microfilaments in cytokinesis.


2. Summarize or explain cell division in prokaryotes.

2006-11-06 09:55:40 · 1 answers · asked by dreamz 4 in Biology

I have to build a biotic ecosystem

2006-11-06 09:50:11 · 2 answers · asked by winter wonderland 3 in Botany

This is a long quetion...I would really appreiciate your answers considering I have to do about 100 of these in the next hour.

What is the name of the following compunds?
1. CaCl2
2. Sr(NO3)2
3. C3H8
4.CuSO4
7. Al2O3
8. SO2
9. MgCO3
10. NaF
11. H2O
12. P2O5
13. Cs3N
14. Ni2S
15. BeSO3

2006-11-06 09:49:43 · 4 answers · asked by jamie23 3 in Chemistry