Mathematics - 12 June 2006

A dealer brought 10 sewing machines in Rs 8000 and had sold them at a profit equal to s.p. of 3 machines.....find the s.p. of one machine?

2006-06-12 23:55:09 · 7 answers · asked by watchmesmiling 1

In mathematics why minus multiplied by minus is equal to plus?

2006-06-12 23:52:01 · 6 answers · asked by alipz 1

2006-06-12 23:43:50 · 44 answers · asked by jolab 1

Hi lets talk about math ,what do you think about math do you think that math is just numbers we play with them???
i think math has a big and strange world and we haven't known it since we will be mathematician and will live in other world!~!~!!!

2006-06-12 23:40:17 · 6 answers · asked by Anonymous

2006-06-12 23:22:12 · 20 answers · asked by sarah67789 2

Prove that
when u = f(x) and v = g(x)
d/dx (uv) = v du/dx + u dv/dx

^_^

2006-06-12 22:58:27 · 3 answers · asked by kevin! 5

The game “odd man” is played as follows: Three people all flip a coin. If one of the players has a different outcome than the other two, that player is the loser. Otherwise, the game is a draw. What is the probability that a game of odd man ends in a draw?

2006-06-12 22:54:45 · 10 answers · asked by Wolfie 7

a math question

2006-06-12 21:58:01 · 16 answers · asked by cute_beachua 1

2006-06-12 21:14:35 · 7 answers · asked by Rishav 2

I have the following problem: I have a matrix (NxM) with random
integers. I can move the columns up and down. For example if I have the
following matrix and move down the first column:
-5 9 4 13
0 8 10 -7
3 6 1 15
-4 11 -6 5
then it'll become:
-4 9 4 13
-5 8 10 -7
0 6 1 15
3 11 -6 5
By analogy we do the same for the up movement.

We can also move the rows left and right:
3 -4 2 3 - becomes:
3 3 -4 2

I have another matrix which is a result from the first matrix and up,
down, left and right movements.

The problem is if I have the first matrix and the result matrix how to
find the movements?

Excuse my bad english :)

2006-06-12 21:01:45 · 5 answers · asked by Nickolay K 1

show that the arc length from theta=0 to theta = ~ is equal to the length of the part of the tangent at theta=0. That is cut off by the x-axis and y-axis

2006-06-12 20:14:47 · 2 answers · asked by top_ace_striker 2

i learnt round off 4 years ago & unfortunately i forgot it so please help solving this question.

2006-06-12 19:59:09 · 12 answers · asked by Anonymous

2006-06-12 19:49:40 · 2 answers · asked by Anonymous

2006-06-12 19:18:47 · 21 answers · asked by Anonymous

2006-06-12 18:58:36 · 7 answers · asked by direksabu 1

two spheres have radius of 3 cm and 5 cm. what is the ratio between the areas of their great circles?

2006-06-12 17:26:54 · 9 answers · asked by Kayla K 1

An instructor is planning on giving a multiple choice test. Recognizing that students may use a guessing strategy, she wants to deduct points for providing the wrong answer. The test will consist of 25 problems, each with 5 choices. The instructor will award 4 points for a correct answer, but wants the expected value of the grade to be 0 for a student who gueses. How would the penalty work?

What if the test consisted of 20 problems with 4 choices each? 5 points for a correct answer. What is the penalty?

What if the test had 30 problems with 3 choices each? 3 and 1/3 points for a correct answer. What's the penalty?

What if the test had 50 true/false type problems. 2 choices and 2 points for each correct answer. What's the penalty?

**If anyone can help to solve this problem, please tell me if there's some formula you have to use to solve it. I have a statistics book, but have no idea which formula, if any, I should use to solve it. Thanks!!!**

2006-06-12 17:20:59 · 5 answers · asked by Anonymous

2006-06-12 16:56:43 · 20 answers · asked by Anonymous

tell me the website from where i can get it except yahoo and google

2006-06-12 16:49:04 · 2 answers · asked by Anonymous

how did you figure it out?

2006-06-12 16:12:42 · 9 answers · asked by Anonymous

choices and their sides

1. 22cm, 14cm, 7cm

2. 18cm, 7cm, 12c

3. 14cm, 22cm, 6cm

2006-06-12 16:10:44 · 12 answers · asked by Anonymous

ok i don't understand how this works.
-5x+1>(or equal to) 1
when i subtract the 1 from both sides i get 0, so is it -5x>(or equal to) 0? is that right so far?
and also 6+3x<(or equal to) 5, would the answer be x>(or equal to 1/3) ?

2006-06-12 16:00:46 · 10 answers · asked by Stephanie 3

2006-06-12 15:47:26 · 5 answers · asked by Andrew M 1

2006-06-12 15:36:47 · 14 answers · asked by thunderstorm 2

i know the answer is 2sqrt5 but how do you get that?

2006-06-12 14:56:08 · 16 answers · asked by BeAuTiFuL 6

the sides are 2x (height), x (width), and the hypotenuse is 10. the answer is 20 but how do i work it out? the formula is a=1/2(ht * width)

2006-06-12 14:38:17 · 6 answers · asked by BeAuTiFuL 6

2006-06-12 13:57:33 · 15 answers · asked by ♪ fabi ♫ 2

2006-06-12 13:55:22 · 5 answers · asked by top_ace_striker 2

2006-06-12 13:30:28 · 7 answers · asked by shawna t 1

12 and 5 9ths plus 4 and 1 8ths. (both numbers are mixed numbers) a.12 b. 28 c. 17 or d. 124???

2006-06-12 12:58:17 · 9 answers · asked by Anonymous