Science & Mathematics - 18 October 2007

If you say "Holland" or "The Netherlands"? Is that the same? Or there is a distinction??

2007-10-18 06:16:00 · 5 answers · asked by ohoh 4 in Geography

Do you have to freeze the seeds before you plant them? What kind of soil do they need? How much watering do they need? How long until they sprout? What then?

Thanks for answering

2007-10-18 06:14:17 · 3 answers · asked by Lana 2 in Botany

mention its use....

2007-10-18 06:08:55 · 7 answers · asked by Ben! 3 in Medicine

I really like math and science so I figured being a chem. eng. is perfect! But what exactly does that entail? What can you do with a degree in chem. eng. and what exactly is it?

2007-10-18 06:07:22 · 2 answers · asked by Anonymous in Engineering

I know it is in the State of Idaho, USA and north of the Idaho/Utah border. Can you find it for me?

2007-10-18 06:04:43 · 3 answers · asked by bobnan51@yahoo.com 1 in Geography

what fuels a candle?

2007-10-18 06:04:10 · 5 answers · asked by Anonymous in Chemistry

2007-10-18 06:02:00 · 4 answers · asked by ian15v 1 in Geography

2007-10-18 05:57:40 · 5 answers · asked by donpierro 1 in Mathematics

i have the number 172 which is 7% of a bigger number. how do i fugure out the bigger number knowing that 172 is 7% of it?

2007-10-18 05:52:30 · 9 answers · asked by snippi f 2 in Mathematics

Fill in the missing information for the following trapezoids:
height = 28.9 m
b1 = 26.9 m
b2 = ________
area = 806.31 m^2

A 17.06 sq m
B 15 m
C 46 m
D 23 m
E 28.9 m
F 51 m

2007-10-18 05:41:15 · 3 answers · asked by Anonymous in Mathematics

Fill in the missing information for the following trapezoids:
height = ________
b1 = 20 cm
b2 = 21 cm
area = 205 cm2

A 17.06 cm
B 12.5 sq cm
C 26 cm
D 10 cm
E 28.9 cm
F 50 cm^2

2007-10-18 05:40:10 · 7 answers · asked by Anonymous in Mathematics

2007-10-18 05:30:31 · 6 answers · asked by riverdaletracy 1 in Geography

is 2x+3y=7 a linear and literal equation ( I belive it is)

y=2x-6 Is this true, false or open (I belive it is true)
16<2(x) Is this true, false or open if x=10 ( I belive this to be true)
a+4=8 Is this true,false or open if a=5 ( I think that this is false)
I am not understanding these any help would be greatly appricated

2007-10-18 05:27:37 · 4 answers · asked by Anonymous in Mathematics

2007-10-18 05:27:26 · 6 answers · asked by Anonymous in Biology

2/x^6 divided by 4/x^2 can anyone please help

2007-10-18 05:25:58 · 11 answers · asked by chas_lynn2002 2 in Mathematics

Need help!!! Thanks : )

2007-10-18 05:25:18 · 1 answers · asked by Anonymous in Mathematics

2007-10-18 05:24:25 · 6 answers · asked by dlsemail58-bowling@yahoo.com 1 in Weather

I am suppose to add and express my answer in simplest form x^2/x+10+9x-10/x+10 trust me when I say I am lost.

2007-10-18 05:21:41 · 10 answers · asked by chas_lynn2002 2 in Mathematics

2007-10-18 05:21:31 · 3 answers · asked by Anonymous in Mathematics

2007-10-18 05:20:58 · 1 answers · asked by Unknown 1 in Mathematics

What is the area of a regular octagon with a side of 6 cm?

A 178.06 sq cm
B 122.5 sq cm
C 216 sq cm
D 23 cm^2
E 173.82 cm^2
F 510 cm^2

2007-10-18 05:11:56 · 5 answers · asked by Anonymous in Mathematics

Calculate the area for each of the polygons below. If you do not know an equation to use, divide the polygon into other shapes to determine the area.

A regular heptagon with a side of 7 inches.
A 178.06 sq in
B 294.16 sq in
C 169.21 sq in
D 358.91 sq in
E 157.36 sq in
F 277.91 sq in

2007-10-18 05:07:43 · 2 answers · asked by Anonymous in Mathematics

A 2 kg mass is attached to a string which is attached to a second mass 1 kg The string passes over a pulley and the two masses both hang down. They are released from rest. How long does it take for each to move 0.9 metres?

A. 0.52 s
B. 1.35 s
C. 0.74 s
D. 0.25 s
E. 0.17 s

2007-10-18 05:06:13 · 1 answers · asked by Bryan K 1 in Physics

2007-10-18 05:02:28 · 13 answers · asked by daniel l 1 in Mathematics

and thanks so much for your help!

2007-10-18 05:01:25 · 12 answers · asked by Megan Thrift 1 in Mathematics

2007-10-18 04:59:52 · 3 answers · asked by k k 1 in Engineering

Q:1-A fighter plane flying horizontally at an altitude of 1.5 km with speed 720 kmph passes directly overhead an anti aircraft gun.At what angle from vertical should the gun be fired for the shell with muzzle speed 600m/s to hit the plane? At what minimum altitude should the pilot fly to avoid being hit?

Q:2-Obtain an expression for work done in moving a body up an inclined plane if the coefficient of friction between the body and the plane is u (meu).

no weird ans plz.
i will b very thankful 2 d person who gives me d answers!!!

2007-10-18 04:59:08 · 3 answers · asked by Anonymous in Physics

here is a puzzle and Analysis is given below

http://i218.photobucket.com/albums/cc298/curseofgoldendragon/save-1.png

please note the green shaded area . i made that green .......because i had some problems there . i don't know how to read those and how to utilize them . whats the systemetic way to utilize these facts ? which one to use first ? there are 5 facts and i am in trouble what to take into.......how to decide that ?

Here is the Analysis solution

part1:
http://i218.photobucket.com/albums/cc298/curseofgoldendragon/t1.png

part2
http://i218.photobucket.com/albums/cc298/curseofgoldendragon/t3.png

2007-10-18 04:58:54 · 3 answers · asked by calculus 1 in Mathematics

2007-10-18 04:58:39 · 6 answers · asked by dobowilliam 1 in Earth Sciences & Geology

Okay, so the proof of the fact that the value of (p-1)! mod p is always p-1 is below:

If p is prime, the numbers {1,2,....p-1} form a group under multiplication modulo p. So for each element a in this group, there is an element b such that ab is congruent to 1 mod p.

If a is congruent to b mod p, then a^2 is congruent to 1 (mod p). This means that a^2 - 1 = (a+1)(a-1) = 0 (mod p). Since p is prime, this means a is congruent to 1 or -1 mod p (which means a = 1 or a = p-1).

Okay, so my question is, how did they get this part:
"If a is congruent to b mod p, then a^2 is congruent to 1 (mod p)."

2007-10-18 04:56:41 · 2 answers · asked by 3545 2 in Mathematics