Mathematics - 30 August 2006

2006-08-30 23:41:40 · 8 answers · asked by makola 1

What is the flow rate of a shower i.e how many litres used per minute as I would like to know if I took a 5 minute shower would it be less economical or more economical than taking a bath in a normal averaged size bath that was say 3/4's full?

I suppose it very much depends on how many litres of water the bath holds.

2006-08-30 23:32:19 · 13 answers · asked by Anonymous

in relation to http://answers.yahoo.com/question/;_ylt=A9FJujW.s_ZEDj0B5gIjzKIX?qid=1006042630384

After getting to the end of the chessboard, how many people would it feed? (assuming one person eats one bowl of rice)

2006-08-30 23:08:32 · 4 answers · asked by asiabunny 3

it is easy have fun
six similar blouse and 4 similar skirts cost $191.i bought 4 such blouses and 2 such skirts and paid $108.How much did a blouse cost?

2006-08-30 23:01:43 · 15 answers · asked by Anonymous

question

2006-08-30 22:29:52 · 3 answers · asked by aman7860420 1

Sure I can write it down, but then again I can write down Hairy Puke-filled dinosaur **** and that doesn't mean THAT exists.

So the number 227, is it just a myth? Has any one actually ever come across this number in real life? What mind boggling complex calculus can you use to prove to me that it isn't just a figment of our imaginations (like the said dinosaur's handbag that I just made up)

10 points to the most complicated answer

2006-08-30 21:58:01 · 22 answers · asked by Anonymous

How to prove cos 3x=4cos³ x-3cos x USING De Moivre's formula? thanks

2006-08-30 21:13:48 · 9 answers · asked by zypher 1

try it is easy
6 identical dice are glued together.what is the sum of all the number of dots on the faces that are glued together,if the sum of the number of dots on opposite faces of each dice is 7?

2006-08-30 21:11:47 · 15 answers · asked by Anonymous

2006-08-30 21:06:32 · 9 answers · asked by Desert Storm 1

2006-08-30 20:32:35 · 4 answers · asked by leiram 1

i asked this before but i think i may have wrong details

Ship A has position vector (5 i + 9 j) km. Relative to an observer on a second ship B, ship A has position vector (7 i + 10 j) km.

i would like to find out

What is the position vector of ship B? position (km) =
How far is ship B from the origin? distance (km) =

thankyou very much for any help

2006-08-30 20:04:12 · 4 answers · asked by zz06 3

2006-08-30 20:01:41 · 35 answers · asked by LamboMan 1

hint:4-30

2006-08-30 19:46:54 · 10 answers · asked by Anonymous

place 4 different numbers in the bubbles at the vertices of the pyramid so that the two numbers at the ends of each edge or diagonal add up to the number on that edge---the picture shows a square like a base ball field. Home would be B first base A second D and third C. There`s a line that meets from B to D running vertical with the number 53 and a line from A to C running horizontal with the number 44. The number between A anb B is 56, the number between B and C is 60, the number between C and D is 41, the number between D and A is 36.
* if u have any kind of help or opinion or even a guess please let me know thanx.

2006-08-30 19:16:22 · 7 answers · asked by Emilia L 1

I want to make several spherical things. For example, a half sphere made of iron, I have flat steel foils. Also a spherical parachute for model rocketry

How can I calculate the shape I have to cut the flat surface in order to get a spherical surface?

2006-08-30 18:52:53 · 3 answers · asked by Anonymous

let bar of xn and s^2 denote the sample mean and variance for the sample x1,...., xn and let bar of xn+1 and s^2n+1 denote these quantities when an additional observation xn+1 is added to the sample.
a) show how bar of xn+1 be computed from bar of xn and xn+1.
b) show that ns^2n+1=(n-1)s^2n + (n/(n+1))(Xn+1- bar of Xn)^2 so that s^2n+1 can be compared from xn+1, bar of Xn and S^2n

2006-08-30 18:35:59 · 5 answers · asked by naids56 2

It's hard for me but I enjoy the work :)

2006-08-30 18:34:03 · 18 answers · asked by rosie768 3

Please help me. And please show/tell me how you got the answer


1) Find the center of a circle with the equation x^2 + y^2 + 2x + 4y - 9 = 0

2) Find the foci of a hyperbola with the equation 9y2 - 72y - 16x2 - 64x - 64 = 0.
a. (3, 4) and (-7, 4)
b. (-3, -4) and (7, -4)
c. (2, 1) and (2, -9)
d. (-2, -1) and (-2, 9)


3) Which equation is shown by the graph in Figure 4?

Figure 4 opens up and down, with the two vertex at (0,4) and (0,-4)

a. (y^2) / 16 - (x^2) / 9 = 1

b. (y^2) / 9 - (x^2) / 16 = 1

2006-08-30 18:28:44 · 5 answers · asked by doodooman 1

2006-08-30 18:19:26 · 5 answers · asked by markusa_j 1

A direct relationship is one for which....?
a. there is no dependent variable.
b. there is no slope to the curve showing the relationship between variables.
c. the dependent and independent variables change in the opposite direction.
d. the dependent and independent variables change in the same direction.
e. there is no independent variable.

2006-08-30 18:17:03 · 2 answers · asked by Olivia 4

i'm trying to figure out how many gallons are in this pool. it's 12 feet across x 36 inches deep. i'm not that good at math. thanks for your help.

this is the site
http://www.walmart.com/catalog/product.do?product_id=3163944

2006-08-30 17:55:35 · 8 answers · asked by shawn r 1

If you don't remember prime numbers here are the first ones:
2,3,5,7,11,13,17,19,23,29

2006-08-30 17:49:22 · 11 answers · asked by ♥ Arvizu16 3

What would it's graph look like.

2006-08-30 17:37:02 · 5 answers · asked by Technotron 2

i did most problems here just want to double check whoever answer are like mine gets the 10 points


===Seven people meet and shake hands with each other===

How many handshakes occur?

Using inductive reasoing write a formula for the number of handshakes if the number of people is N.


==The Fibonacci sequence 1 1 2 3 5 8 13==

What is the ninth term in the patttern

== Name two diffrent ways to continue each pattern ==

1 1 2 __

48 49 50 ___

2 4 ___

A B C ....Z ___

D E F ____

A Z B ____

2006-08-30 17:31:04 · 10 answers · asked by sub.lihhjj 2

Given that
a = 10 i + j and b = 8 i + 6 j

find the following.
Find a unit vector in the opposite direction to a.

i tried -10*i - j but it is not the right answer.

2006-08-30 17:24:34 · 7 answers · asked by zz06 3

shows steps plz

17, 23, 29, 35, 41

1.01. 1.001. 1.0001

12.14.18.24.32

2 - 4 8 -16 32

1, 2, 4, 7 , 11 , 16

32, 48 , 56 , 60, 62, 63

2006-08-30 17:23:31 · 8 answers · asked by sub.lihhjj 2

Is there a site where I can check my answers. This is my first year taking algebra.

2006-08-30 17:23:10 · 6 answers · asked by amelia c 1

a^2b+b^2c+c^2a is symmetric equation?how to solve it

2006-08-30 17:05:47 · 5 answers · asked by regijanu 3

2006-08-30 16:37:54 · 17 answers · asked by Thomas P 1

2006-08-30 16:21:15 · 4 answers · asked by Anonymous