Mathematics - 16 November 2007

2007-11-16 23:07:31 · 13 answers · asked by empeegee 1

1. 10 is what percent of A?
a.) 10A%.
b.) 1/10A%
c.) 10/A%
d.) 100/A%
e)1000/A%.

2. A rectangle has a perimeter equal to the circumference of a circle of radius 3. If the width of the rectangle is 3, what is its length?

3. What is the remainder when 5^20 is divided by 100??

2007-11-16 22:52:04 · 4 answers · asked by Anonymous

The sum of the first n terms in a sequence is always 1/n. Find the product of the first 2007 terms. Show work if you can. Thanks for your help.

2007-11-16 22:35:02 · 2 answers · asked by Anonymous

The intersection of a unit cube and a plane passing through its center is a regular hexagon. What is the area of the regular hexagon? Thanks for your help.

2007-11-16 22:32:11 · 2 answers · asked by Anonymous

True or false:

An integer prime p can be written as the sum of two squares if and only if there exists an integer n such that n^2 is congruent to -1 (modulo p).

Prove your answer in a fairly elementary way.

2007-11-16 22:26:41 · 2 answers · asked by Curt Monash 7

In the finite field Zp -- i.e., the integers modulo p, for p a prime -- "-1" is always defined. For which p does -1 have a square root?

State your test and give an elementary proof.

2007-11-16 22:23:45 · 3 answers · asked by Curt Monash 7

1. If f(x) = 4a, how can i show that f(x+2) / f(x-1) = f(3)
2. What is the equivalent functional definition of f(x) = |x| + x ?
3. If f(x) = x – 2 / x2 + 1,what is
a. f(2a)
b. f(1/x)

2007-11-16 22:05:05 · 2 answers · asked by Mica K 2

2007-11-16 21:52:37 · 7 answers · asked by tony2007 2

-1,1,3,5,9 what the nth term please?

2007-11-16 20:45:08 · 9 answers · asked by Lttlmssz 2

And how did you you find it? I hate math. Like whats the equation?

2007-11-16 20:42:26 · 24 answers · asked by Anonymous

2007-11-16 19:17:36 · 6 answers · asked by ruby 2

The most economicla proportions of for a right circular cone is to have its height three times as long as its diameter. What lateral area of the cone would produce a volume of 100cm^3?

please help me...

2007-11-16 18:46:19 · 4 answers · asked by greeK_god_HirYu 3

Here is the problem: http://i6.tinypic.com/7y7kmx5.gif

a. 178
b. 7924
c. 9436
d. 18,872

2007-11-16 18:45:56 · 3 answers · asked by sillyboys_trucksare4girls 2

can some1 point out my mistake over here? I can't seem to find my mistake n i think i may have a conceptual misunderstanding... thanks...

2 < x < 4
4 < x^2 < 16 (since x is definitely positively)
-5 < (x^2) - 9 < 7
-1/5 > 1 / [(x^2) - 9] > 1/7

the end results doesn't seem logical
can any1 help? thanks...

2007-11-16 18:08:12 · 4 answers · asked by YoherZ 1

Cont. - If the degree measure of an included angle is 60°, what is the lenght of the shorter diagnol of the parallelogram?

2007-11-16 17:44:19 · 3 answers · asked by sharaont 6

2007-11-16 17:00:51 · 4 answers · asked by sharaont 6

I am writing a program for making complex numbers operations. However, I have one problem with powers:
Assume I want to calculate x^y, where x and y can be any number (integer, real or complex, finite or infinite).
In this case x^y = Exp(y*Ln(x))

Exp and Ln are defined for a complex number "z" (see details below)

The problem is that x^y will fail when x=0 - and don't know how will behave for infinite numbers
I'd like to know:
a) If my definitions of Exp and Log are right for any value (real, complex, finite or infinite)
b) What exceptional case I should handle specially in the power function (for example, 0^0=undefined, x^0=1, 0^2=?)
I want to make it the most general possible...
Thanks.

2007-11-16 16:53:54 · 1 answers · asked by Anonymous

Solve the system:

-x + 5y = 8

x + 2y = 6

2007-11-16 16:42:34 · 11 answers · asked by Anonymous

(2x+7)^-1....Do I apply the chain rule?

2007-11-16 16:40:38 · 5 answers · asked by RedSparkle 1

My F'(x) that I got is this; (3(x^3+4x+6)^2(3x+4)

For some reason the comp is saying it's wrong???!!

Is it?

2007-11-16 16:35:44 · 5 answers · asked by RedSparkle 1

Help me please

2007-11-16 16:18:36 · 7 answers · asked by Tonie M 1

I've been searching all online trying to find a source that explains RSA (encryption and decryption) is simple terms. Can someone explain it to me with examples? It all seems like magic and I'd like to understand why/how it works. Thanks!

2007-11-16 16:09:32 · 1 answers · asked by Anonymous

Word for word:
Find the real valued solution(s) of 3 - 2rad(4x - 3) + x = 0, Check for extraneous root.

By "rad", I mean the square root sign, its just that I can't type it in here. The terms in the parenthesis would be under the radical sign.

Any help would really be appreciated, as I now am redoing the test as homework to see what I got wrong and how to fix it.

2007-11-16 15:54:42 · 3 answers · asked by Anonymous

2007-11-16 15:49:07 · 9 answers · asked by Anonymous

2007-11-16 15:40:59 · 5 answers · asked by Anonymous

Not sure which identities are used to solve this, going around in circles.

2007-11-16 15:36:26 · 5 answers · asked by Computer Guy 7

for his breakfast. if 375 students take idly, 375 students take dosa , 375 students take puri and 375 students take chapatti for their breakfast, the number of students who take all the four items is at most...

options :--

275
300
225
325
375

please give detailed answer.

2007-11-16 15:34:28 · 2 answers · asked by Anonymous

i need to know so i can put down the right amount of foggers per so many feet... thank you

2007-11-16 15:27:20 · 12 answers · asked by Kristi 3

Simplify: (5-2i)(3+i)



a. 17 - i

b. 15 + i

c. -17 + i





Simplify: 3/i
(Division)



a. -3i

b. -3/i

c. 3i

2007-11-16 15:22:47 · 7 answers · asked by ♥ ღAngelicaღ♥ 2

What is the square root of -1?



a. i

b. -1

c. 1

2007-11-16 15:14:16 · 6 answers · asked by Anonymous