Science & Mathematics - 2 October 2006

I hear that fat actually contains stem cells.

2006-10-02 05:38:40 · 10 answers · asked by Mr.happy 4 in Biology

These diagrams represent the first three trapezium numbers (each diagram always starts with 2 dots in the top row)

1st
OO

2nd
OO
OOO
OOOO
3rd
OO
OOO
OOOO
OOOOO

The 3rd trapezium number is 9 because 9 dots can be arranged as a trapezium.
There are 2 dots in the top row, 3 dots in the next row and 4 dots in the bottom row.

a)Write down two other trapezium numbers.
b)i) Find an expression for the number of dots in the bottom row of the nth trapezium number.

ii) Test your expression for a suitable value of n.
iii) Find, with an explanation, an expression for the number of dots in the bottom of the diagram for the (n+1) th trapezium number.

The nth trapezium number is x.

c)i) Write down an expression in terms of n and x for the (n+1)th trapezium number.

ii) Test your expression for a suitable value of n.

d)Obtain, with an explanation or justification a general expression in terms of n for the nth trapezium number.

2006-10-02 05:31:50 · 9 answers · asked by Anonymous in Mathematics

2006-10-02 05:30:16 · 1 answers · asked by Anonymous in Other - Science

2006-10-02 05:26:25 · 18 answers · asked by rony42r 1 in Mathematics

2006-10-02 05:21:08 · 3 answers · asked by shikh_bhardwaj 1 in Other - Science

Can someone explain the differences between LPN RN and what not the differences between a 2 year RN and 4 year RN... I have a BA in Psychology and I'm thinkin about going back to get a nursing degree but I don't know which is which... I don't want to end up only being qualified to change bed pans

2006-10-02 05:20:03 · 3 answers · asked by Jembee1720 4 in Medicine

Properties of elements. Please help me out and tell me if each of the foloowing element is magnetic/non magnetic and conductive/non conductive.

Sn (tin)
Al (aluminium)
Pb (lead)
Zn (zinc)
Fe (iron)
Cu (copper)
Mg (magnesium)
Si (silicon)
S8 (8 is a subscript and i dunno what it is? but S is sulfur)
Ni (nickel)
C (carbon)

2006-10-02 05:17:26 · 2 answers · asked by yassem1ne 2 in Chemistry

2006-10-02 05:16:15 · 10 answers · asked by markus99s 1 in Zoology

like vaccum energy

2006-10-02 05:15:26 · 11 answers · asked by murugasu k 2 in Physics

2006-10-02 05:13:51 · 3 answers · asked by sweety k 1 in Other - Science

what is the AVERAGE ACCELERATION of the sprinter and HOW LONG does it take him to reach that speed???

please and thank you for your help!! my friends and i have been trying to figure out this problem, we're wondering if you guys can help us. thnx again!

2006-10-02 05:13:25 · 2 answers · asked by Anonymous in Physics

I feel the metal bucket is less weight in water than in the air , why? Will the object's weight will differ in Oil when compared to water?

2006-10-02 05:12:57 · 43 answers · asked by Ken 1 in Physics

2006-10-02 05:12:49 · 17 answers · asked by Anonymous in Zoology

i need this i cant do these wasnt exaplained well at school

2006-10-02 05:12:06 · 3 answers · asked by Danielle 3 in Biology

2006-10-02 05:11:40 · 7 answers · asked by Marcel P 1 in Chemistry

about plants

2006-10-02 05:11:16 · 5 answers · asked by jojogurl 1 in Botany

1.__________________

2006-10-02 05:10:52 · 3 answers · asked by Anonymous in Other - Science

2006-10-02 05:10:26 · 10 answers · asked by Anonymous in Other - Science

5/8 .2/5=

2006-10-02 05:10:20 · 7 answers · asked by lovinmymatt 2 in Mathematics

Than why is it so Politically Incorrect to say that Racial divides are not just societal?--
But based on how we evolved in different parts of the earth and what parts of the brains we needed to utilize to survive.
Why are we not allowed to point this out without being called "racist"?

2006-10-02 05:09:04 · 8 answers · asked by Anonymous in Biology

2006-10-02 05:07:12 · 5 answers · asked by Ray H 7 in Physics

i'm havin an exam tommorow and this is part of it.pleasee help:
What will print this programm?
#include
#define A 6
#define PR printf(''i=%d j=%d k=%d/n'', i,j,k);
#define MACRO(i,j) i+j
void main()
{
int i=1, j=5, k;
k=MACRO(j,++i*4);
PR;
k+=A*MACRO(++i+3, 2+j--);
PR;
#define MACRO(j) i*j++
i*=A;
k=MACRO((3*j,++j*2)+A);
PR;
k+=MACRO((++j,k-3*j))*A;
PR;
}

2006-10-02 05:07:10 · 4 answers · asked by nba fan 2 in Mathematics

http://www.flickr.com/photos/shoreham/255227361/

It might be a mongrel called a cross-breed in sheep circles.

2006-10-02 05:06:20 · 10 answers · asked by Perseus 3 in Zoology

2006-10-02 05:02:48 · 3 answers · asked by Danielle 3 in Biology

2006-10-02 04:59:07 · 29 answers · asked by john r 3 in Mathematics

2006-10-02 04:57:51 · 16 answers · asked by Anonymous in Astronomy & Space

2006-10-02 04:56:23 · 1 answers · asked by Moebuggy 3 in Botany

I live near the sea and was told that if we get a low pressure and a high tide we could be flooded, I would like to know how the air pressure affects the tides.

2006-10-02 04:52:03 · 6 answers · asked by sue l 4 in Weather

2006-10-02 04:50:08 · 16 answers · asked by Adriana A 1 in Chemistry

In the formula y=mx+b what does "M" mean? I know it STANDS for "slope" what is its real meaning?
X and Y? I know that xand stand for a step in the foil method but what is its actual meaning?

2006-10-02 04:48:09 · 7 answers · asked by Anonymous in Mathematics