Science & Mathematics - 5 October 2006

I know in Biology and some other specfic science studies, inbreeding can case mental retardation/defects in their offspring. So, can we assume that mental retardation is caused by some type of inbreeding or incest of some sort or is it random and can happen to just about anyone?

2006-10-05 07:25:35 · 13 answers · asked by Des 1 in Biology

2006-10-05 07:25:09 · 7 answers · asked by karen k 1 in Weather

2006-10-05 07:24:40 · 17 answers · asked by brandywine614 1 in Mathematics

If we evolved to grow an eye on the end of the first finger on one hand we could check our own ears out and look over high walls.

2006-10-05 07:24:29 · 19 answers · asked by Anonymous in Biology

2006-10-05 07:22:52 · 15 answers · asked by brandywine614 1 in Mathematics

See my other question also, please.

15.a. Show that f = max(f,0) + min(f,0). This particular way of writing f is fairly useful; the functions max(f,0) and min(f,0) are called the positive and negative parts of f.
b. A function f is nonnegative if f(x) is > or = 0 for all x. Prove that any function can be written f = g - h, where g and h are nonnegative, in infinitely many ways.

23. Suppose that f(g(x)) = I, where I(x) = x. Prove that
a. if x isnt equal to y, then g(x) isnt equal to g(y)
b. every number b can be written b = f(a) for some number a

2006-10-05 07:22:15 · 1 answers · asked by Andrew H 1 in Mathematics

you would think somebody would have come up with this or triangles, hexagons, etc. tell us why, howcome, and what we can do about this. logical and stupid answers are allowed.

2006-10-05 07:19:09 · 22 answers · asked by Anonymous in Astronomy & Space

There are several problems, if you can help out on some (feel free to solve but even just tips on where to start or how to go about them) I'd greatly appreciate it. In answers, please put the number of which you're responding to. Thanks in advance!

2. If A, not equal to empty set, is bounded below, let B be the set of all lower bounds of A. Show that B is not equal to empty set, that B is bounded above, and that sup B is the greatest lower bound of A.

8. For which numbers a, b, c, and d will the function: F(x) = (ax +b)/(cx+d) satisfy f(f(x)) = x for all x such that f(f(x)) is defined.

13.
a. Prove that any function f with a domain of all reals can be written as f = E + O, where E is even and O is odd.
b. Prove that this way of writing f is unique.

2006-10-05 07:18:44 · 1 answers · asked by Andrew H 1 in Mathematics

I desperately need help. Can anyone name these compounds?

1. Ag2S
2. Fe3(PO4)2
3. AgNO3
4. Mg2SO4
5. CuCl
6. BaCO3
7. (NH4)2SO4
8. Na2O
9. Mg(OH)2
10. NaNO3
11. KClO3
12. ZnSO4
13.CuSO4
14. MgSO4
15. NH4Cl
16. FeCl2
17. CrCl2
18. (NH4)2CO3
19. H2SO4
20. BaSO4
21. NaCO3
22. KNO3
23. Na2O2

I know it's a lot but if you know any of them please help me out.
Thanks!

2006-10-05 07:15:50 · 5 answers · asked by picklegrl 1 in Chemistry

can any one give me explaination of this phenomenon, level year 10?

2006-10-05 07:11:24 · 1 answers · asked by iman 1 in Physics

Adult tickets for a play cost $6 and child tickets cost $5. If there were 26 people at a performance and the theater collected $141 from ticket sales, how many children attended the play? Solve the system of equations using addition.

2006-10-05 07:09:27 · 6 answers · asked by brandywine614 1 in Mathematics

[X^n,P]
[f(x),P] {where f(x) is a function of x}
[d2/dx2,P]
[e^(ax^3),d/dx]
[e^(ax),cos^2bx+sinbx] = 0

2006-10-05 07:06:30 · 2 answers · asked by nathaniel49 2 in Mathematics

2/5 x = –10

2006-10-05 07:06:10 · 8 answers · asked by brandywine614 1 in Mathematics

Consider the set Tof positive integers d for which there exists an integer n such that d evenly divides both (13n + 6) and (12n + 5). find the sum of the elements of T.

2006-10-05 07:03:35 · 5 answers · asked by Anonymous in Mathematics

can be
a)210
b)200
c)190
d)180

2006-10-05 07:03:27 · 7 answers · asked by Santha s 1 in Mathematics

A box contains sweets of 6 different flavours. There are at least 2 sweets of each flavour. A girl selects 3 sweets from the box. Given that these sweets are not all of the same flavour, calculate the number of different ways she can select her 3 sweets.
Please explain your reasoning and give me some tips to help me understand permutation and combination once and for all for my november GCE AddMaths exams :)

Thanks!!

2006-10-05 07:02:36 · 2 answers · asked by Y L 2 in Mathematics

Which property of the real numbers is illustrated by the following statement?
5 • (10 + 6) = 5 • 10 + 5 • 6
Commutative property of multiplication, or
Associative property of addition, or
Associative property of multiplication, or
Distributive property

2006-10-05 06:59:35 · 10 answers · asked by brandywine614 1 in Mathematics

solve for N:
C =( A^N/N!)/ (summation of(A^i/i!))
range of summation is from i = 0 to N

2006-10-05 06:58:24 · 6 answers · asked by unorthogonal 1 in Mathematics

My family has a star I have acsess to. The size is maybe 48" diam. Fell back in the 30s I am guessing.. It has been here forever.

2006-10-05 06:55:11 · 4 answers · asked by Labatt113 4 in Astronomy & Space

It would be a total waste of time and money!

2006-10-05 06:53:24 · 19 answers · asked by Anonymous in Astronomy & Space

1. Explain how it might happen that the true population mean would not fall within a confidence interval created to estimate the mean.

2. When opinion polls are reported in the press, they given an error of + 3 points for example. Explain what that + 3 means.

2006-10-05 06:52:49 · 2 answers · asked by oneluv804 2 in Mathematics

2006-10-05 06:52:45 · 14 answers · asked by jhaamnise 2 in Chemistry

2006-10-05 06:51:16 · 8 answers · asked by catchup 3 in Engineering

Express 52 as a % of 65

i need answer and method please and hurry!!!

2006-10-05 06:50:23 · 33 answers · asked by Adriaan 1 in Mathematics

2006-10-05 06:49:47 · 9 answers · asked by UNIVERSAL 1 in Other - Science

2006-10-05 06:47:25 · 27 answers · asked by A C 1 in Zoology

2006-10-05 06:44:18 · 12 answers · asked by UNIVERSAL 1 in Other - Science

I have heard that the M Theory is capable of solving every problem related to the origin of the universe...is it true? If so, how is it possible?

2006-10-05 06:44:07 · 5 answers · asked by Anonymous in Astronomy & Space

Please show your work if you want credit.

2006-10-05 06:44:00 · 7 answers · asked by Anonymous in Mathematics

2006-10-05 06:40:29 · 3 answers · asked by riany 1 in Chemistry