Mathematics - 23 August 2007

2007-08-23 09:59:42 · 6 answers · asked by Shane H 1

2007-08-23 09:50:10 · 7 answers · asked by Crisamar M 1

a(3tx-2b)=c(dx-2)?

2007-08-23 09:48:23 · 4 answers · asked by [xo♥ox] 1

1. There are four points on a line in the order of A, D, C and B. AD=(5/9)*DB, AC= (9/5)*CB and CD=4, what's the length of the whole line being AB.

2. A line segment AB is divided into 3 parts, the ratio of the length of the three parts is 3:4:5. The distance between the midpoint of the first part and the midpoint of the first part and the midpoint of the second part is 1.75 cm. What is the length in centimeters of AB.

3. There are 6 points on a plane, and exactly 3 points are in the same line. How many lines can be drawn through these points?

2007-08-23 09:47:25 · 2 answers · asked by Anthony W 2

How many seconds there are in a (non-leap) year?

2007-08-23 09:45:29 · 7 answers · asked by Lidia C 1

1. bx-cx= -c
2. x/a - 5=b

2007-08-23 09:45:14 · 3 answers · asked by [xo♥ox] 1

write each number in scientific notation

1) -0.0128



write each number without exponents


8.9 x 10^6

2007-08-23 09:40:20 · 2 answers · asked by ineedmathhelppeas 1

A circle is given with an inscribed equilateral triangle and each side of the triangle having a measurement of 24 cm. What is the probability of selecting a point at random inside the circular region, but not inside the triangle, assuming that the point cannot lie outside the circular region. Leave your answer in exact form.

2007-08-23 09:30:12 · 5 answers · asked by Anonymous

when do you multiply and/or add exponents?

2007-08-23 09:21:25 · 5 answers · asked by ineedmathhelppeas 1

2007-08-23 09:13:00 · 15 answers · asked by mirrorbee 6

What is the gretaest integer that can not be reached by adding different perfect square integers? I started thinking about this problem a few days ago but could made no progress. What is the general idea here? Does it require a graduate level of mathematics?

2007-08-23 09:05:21 · 3 answers · asked by bilgilikisi 1

2007-08-23 09:01:50 · 1 answers · asked by Anonymous

m^2 + 12m + 30 = 0

2007-08-23 08:57:22 · 4 answers · asked by xrandomnessx 2

Hello,

I am trying to calculate the circumference of a ring with a cross cut out. For better understanding see this drawing:
http://img14.imgspot.com/u/07/234/16/slottedtube.gif

Known dimensions are D, d1 and d2. I want to calculate the total length of lines and curves marked in RED color.

Based on the knowledge gained from one of my previously asked question I managed to come up with a foruma to calculate this. I would appreciate if you could have a look and tell me if my formula is correct or did I make a mistake?

Here goes:

The total length L is:
L = 8 * X + 4 * Y

X = 1/2 * SQRT(D^2 - d2^2) - 1/2 * SQRT(d1^2 - d2^2)

Y = (90 - 2 * arcsin(d2/d1) ) * PI * d1 / 360

Is this correct? If someone can calculate the surface on his/her own and let me know if my approach is correct that would be great.

Thanks in advance!

2007-08-23 08:36:07 · 1 answers · asked by John B 1

2007-08-23 08:35:43 · 1 answers · asked by Anonymous

Could you please factor the following expression(s)? (one or both is fine...thanks)

y^3 - 27

and

x^4 - 16

2007-08-23 08:32:04 · 3 answers · asked by framling 1

2007-08-23 08:21:12 · 2 answers · asked by catmuffin 1

2007-08-23 08:21:10 · 4 answers · asked by NaKeema T 1

2007-08-23 08:14:01 · 4 answers · asked by Anonymous

Check the Y!A question and answer:

http://answers.yahoo.com/question/index;_ylt=AmyV7DF8EANzCWGaQXj4PYPsy6IX?qid=20070823012534AAOMso7

Can anybody explain why there should be a discontinuous bifurcation convergence in values for the function x^x^x^x... (to infinity), beginning at x = (1/e)^e, as x approaches 0 from higher values? It looks like a fork like what you see in a water "gas-liquid-solid" phase diagram, to give you a pictorial idea.

2007-08-23 08:10:27 · 1 answers · asked by Scythian1950 7

-4^0 – 8^0

2007-08-23 07:45:31 · 10 answers · asked by Anonymous

What is the volume of a cube with diagonals of length 6 sqrt(3) cm? ____ cm3

2007-08-23 07:26:08 · 3 answers · asked by Smith 1

2007-08-23 07:19:49 · 5 answers · asked by Anonymous

3p^4= 5p^2 - 2

Solve

2007-08-23 07:17:01 · 4 answers · asked by Anonymous

2007-08-23 07:14:42 · 3 answers · asked by Anonymous

3x^1/3 +2x^2/3 =5


heh i haven't done these in a while... where do i start? please help me out with the steps as to how to find the solutios for it... thank you!

2007-08-23 07:13:38 · 1 answers · asked by hidden_within_a_nightmare 3

2007-08-23 07:11:37 · 7 answers · asked by sure222 5

Please factor it for me because I can't seem to do it.

2007-08-23 07:05:14 · 10 answers · asked by Anonymous

Paul put a rectangular rug 18 feet long and 12 feet wide in his living room. A strip of flooring of uniform width can be seen around the rug. How wide is the strip if the area of the strip is 136 feet?

2007-08-23 07:03:24 · 2 answers · asked by Anonymous

20x^3=125x

....so far i got
20x^3 - 125x=0
5x(4x^2 - 25)=0

where do i go from here?

2007-08-23 06:55:44 · 6 answers · asked by hidden_within_a_nightmare 3