Mathematics - 11 August 2007

What is it's specific gravity?

What is it's density?

2007-08-11 23:12:44 · 4 answers · asked by ? 3

2007-08-11 23:07:35 · 10 answers · asked by Munchen 1

where does it go from there?? Is it something like quadrillion?
Can someone tell me all the units of counting as far they go?

I once read somewhere (I think it was Scientific American..) that there's a word that can be used to count all the spoken words since humans begin talking. So I'm guessing that's like 10 to the 400th power or something. I know googol means 10^100, but that's the largest I know, and I don't know anything between that and trillion.

HELP ME~~

2007-08-11 23:03:53 · 18 answers · asked by Jai K 1

The velocity of a skydiver t seconds after jumping is given by
v(t)= [-(32/k)^1/2] x [(1-e^2t((32k)^1/2)) / (1+e^2t((32k)^1/2))]]
in meter/second, where k is a constant that depends upon the size and shape of the object and the density of the air. Find the therminal velocity with k=0.00064 and k=0.00128

2007-08-11 22:32:04 · 1 answers · asked by pitate d 1

So each one of them contributed Rs.25 and paid the amount to the waiter who gave the cash on the counter. But the restaurant owner gave a Rs.5 discount. Of this amount the waiter pocketed Rs.2 and and distributed Rs.3 by giving each one of them Re.1. So by this logic each of the friends contributed Rs.24 making a total of Rs.72 and Rs.2 are with waiter. So where did the Re.1 go out of a total of Rs.75??

2007-08-11 22:19:28 · 9 answers · asked by Anonymous

one side of a rectangle is 1 dm less than its diagonal. if the perimeter of the rectangle is 62 dm, find the area of the triangle. show ur solution plz. tnx

2007-08-11 22:06:31 · 5 answers · asked by Marigold 1

2007-08-11 21:34:53 · 3 answers · asked by Ronny A 1

A triangle is scalene, does not contain a right angle, has integer length sides, and its area is an integer.

Find the triangle with these properties with the least perimeter.

(By the way I found a formula to work out the area of a triangle without knowing the height - sqrt[s(s-a)(s-b)(s-c)] where s is the semi-perimeter a+b+c/2.)

Thanks, a best answer will be voted for!!

2007-08-11 20:41:52 · 4 answers · asked by Ginga-Ninja 1

2007-08-11 20:15:51 · 3 answers · asked by North Winds 1

2007-08-11 19:47:40 · 9 answers · asked by Anonymous

HELP PLEASE~~
The function ln(x) has Taylor series about a centre c of (x-1) - ((x-1)^2/2) + ((x-1)^3/3) - ((x-1)^4/4) + ....
a) What is the centre c of this Taylor series?
b) Use the ratio test to find the interval of convergence of the series. Ignore the end points.

2007-08-11 19:38:57 · 2 answers · asked by Snoopy 1

answer this for me pleasee! i want to see if im correct or not.

the second side of a triangle is four more than the first side, and the third side is five more than the second. if the product of the first and third sides is added to the product of the second and third sides, the result is 124 more than twice the square of the first side. find the perimeter of the triangle.

2007-08-11 18:57:01 · 4 answers · asked by Anonymous

Sharon's revenue R (in dollars) on the sale of x fruitcakes is determined by the formula R= 50x - x^2. Her cost C ( in dollars) for producing x fruitcakes is given by the formula C = 2x + 40. For what values of x is Sharon's profit positive? (Profit = revenue - cost.)

2007-08-11 18:38:01 · 3 answers · asked by Javid M 1

They all have to be paired and the people cannot be matched up with the same person twice. Is someone able to create an algorithm for this? Online or executable would be great! (Or if anyone knows of an existing program that will do this and where I can download it?)

2007-08-11 18:05:05 · 4 answers · asked by Anonymous

2007-08-11 17:49:15 · 7 answers · asked by lala haha gaga mama 2

algebra

2007-08-11 17:43:23 · 8 answers · asked by Pinky - 1

if dy/dx = 10 - (y/10)
and y = 10 when x = 0
find y in terms of x

2007-08-11 16:51:15 · 5 answers · asked by DeSeRT EaGLe 1

SOLVE FOR J . NOT FOR K

2007-08-11 16:18:41 · 13 answers · asked by stayyoung 3

hey, iam having a difficulty in solving this question:

the rate of decay of a radioactive substance is (km) where m is the mass of the substance remaining. Show that the half life (the time in which the amount of the original substance remaining is halved) of the substance is 1/k ln 2

2007-08-11 15:58:46 · 3 answers · asked by DeSeRT EaGLe 1

2007-08-11 15:09:11 · 4 answers · asked by DoWHATiDO 3

2007-08-11 14:52:19 · 12 answers · asked by Virtuous Woman 1

Don't know if size is the right word.
[ 2 -1 6] + [ -4 5]
[ 3 0 -9] [ 7 5]

2007-08-11 14:51:00 · 5 answers · asked by Rooster 2

Hi. I need some help with this question. Could you explain how its done? It might be easier if you write it down properly but this is the question.

"Solve 1-sin^2 (theta) =1/2 for theta between or equal to 0 and 360 degrees"

Thanks

2007-08-11 14:42:44 · 5 answers · asked by Anonymous

2007-08-11 13:34:19 · 12 answers · asked by Keea 1

1) 10x - 6 =7-12 x = ?
2) 3 3/4 + -2 1/8 - -6 2/5 = ?
3) 5(b +a ) = 27b b = ?
4) 31c + cd = -18 c =?

2007-08-11 13:30:24 · 4 answers · asked by stayyoung 3

I want to learn to add up all the terms so I can see whether it converges or diverges then solve for an exact number.

2007-08-11 13:08:22 · 4 answers · asked by Harry K 1

ok, this is a really easy math question, but my brain is FRIED so i'd highly appreciate it if someone could provide a correct answer and how you got to that answer. ok the problem is
x^2 + 3x = -2
please, if you know the answer to this problem, answer this question. i PROMISE i'll give you points as soon as you answer.
thanks.

2007-08-11 13:07:05 · 12 answers · asked by ? 4

-5(3x - 7)
-4x2(3x2 - x + 1)
-y3(2x2y - 4xy2)
3a3b2(-a3b - a2b2)
(x - 4)(x + 8)
(2x - 5)(x - 9)
(3x + 4)2
**Hint: squaring a binomial means to multiply it by itself. You should multiply (3x + 4)(3x + 4).
(5 + x)(3 - 2x)
(2x - 3)(x2 + 5x - 3)
(2x2 - 5x - 1)(x2 + x - 3)

2007-08-11 12:52:04 · 2 answers · asked by Anonymous

1) I have been working with these kind of polynomials

x^2n + x^n + 1

and I realised that they are a multiple of x^2 + x + 1 but for the cases when n is a multiple of 3.

Adding and substracting x^n, I get:

x^2n + 2 x^n + 1 - x^n = (x^n +1)^2 - x^n

And, if n is an even number, n/2 is a natural number, so, I can factore the expression this way:

[x^n + 1 - x^(n/2)][x^n + 1 + x^(n/2)]

But I cant do this if n is an odd number, since I wouldnt get polynomials factors. But, dividing the original polynomial by x^2 + x + 1, I have noticed that the residual is 0 if n is not a multiple of 3. Any suggestions?

2) In these cases:

x^2n - x^n + 1, adding and substracting 3x^n, I get:

x^2n + 2 x^n + 1 - 3x^n = (x^n +1)^2 - 3x^n

And, if n is an even number, n/2 is a natural number, so, I can factore the expression this way:

[x^n + 1 - V3 x^(n/2)][x^n + 1 + V3 x^(n/2)]

Id like suggestions too for n an odd number

Thanks.

2007-08-11 12:22:30 · 4 answers · asked by Ilusion 4

Rewrite with negative exponents.

1. 2y^3

2. 1/(x^5)

3. 3/(x^4)

4. (2x^2)/(y^2)

5. 2abc

2007-08-11 11:02:25 · 3 answers · asked by Anonymous