Mathematics - 27 December 2007

a. Provide a coefficient matrix corresponding to the system of linear equations.

b. What is the inverse of this matrix?

c. What is the transpose of this matrix?

d. Find the determinant for this matrix.

2007-12-27 23:18:23 · 4 answers · asked by samoht 1

can any one show me the working out for these questions.
1) A dd these fractions. 2/6+6/4
2) Multiply these fractions. 3/6*5/4
3) divide these. 2/3÷4/3

2007-12-27 23:07:27 · 20 answers · asked by Anonymous

figure 2 --> http://www.learningbygrace.org/geom/images/14.3_ch.test.gif

Use Figure 2 above. Compare your biggest sides, and notice that BA and DE are the same side, so BA = DE. Which side(s) is(are) the longest of the entire figure?

2007-12-27 23:03:49 · 6 answers · asked by 極度の後輩 東海 사랑해♥ 3

Ok so it says,

Calculate the angular velocity in radians per minute of a Ferris wheel 250 ft. in diameter that takes 45 sec. to rotate once. Express the answer in terms of pi. For an answer I got 50pi/9min and well, I'm not sure its right...
Then it says to calculate linear velocity for the same problem and express it to the nearest foot per min. For this one I got 1178 ft/1min , but I'm not sure it's right either. So you can see my problem here, can you please help me out here, are these answers correct ? ? ?
Well thanks in advance. =)

2007-12-27 22:50:05 · 7 answers · asked by Kathy© 4

a very big problem to meeeeeee

2007-12-27 22:43:53 · 15 answers · asked by Ashley 1

This has been debated several times in our house following a board game over Xmas. Can anyone please clarify?

2007-12-27 22:41:17 · 12 answers · asked by Anonymous

2007-12-27 22:23:04 · 5 answers · asked by Anonymous

1 line contain course, 3 others don't .. and then 1 line yes 3 others no. for example:
line 1. MECH665
line 2. (none)
line 3. (none)
line 4. (none)
line 5. MECH751
line 6. (none)
line 7. (none)
line 8. (none)
line 9. MECH746
etc ....
line 2189. URPL699

How many courses is there?

2007-12-27 22:14:38 · 2 answers · asked by Anonymous

i wanna see the funky answers that people will put

2007-12-27 22:01:22 · 19 answers · asked by STINKYPOOPMAN 2

1. 4x(x +1) => 3

2. Factor the following polynomial 250x^2 -2x^5 =

2007-12-27 21:53:09 · 4 answers · asked by Noname 2

2007-12-27 21:21:43 · 7 answers · asked by psychopath 1

please help!
thank you!

2007-12-27 21:07:21 · 1 answers · asked by Sofia 1

I posted the following question:

http://answers.yahoo.com/question/index?qid=20071228011124AARNAcZ&r=w

And then artiststree asked : "What were the mathematical odds of that happening?"

So here I am folks, I am stumped on this one myself.

What are the odds?

2007-12-27 20:25:30 · 3 answers · asked by Anonymous

4 men and 4 boys can do a piece of work in 3 days, while 2 men and 5 boys can finish it in 4 days. how ling would it take 1 boy to do it? How long would it take 1 man to do it?

i am a little confused, u should solve it using linear equations in two variables. and i wrote
let the no. of boys be y and the no of men be x then
1/4x+1/4y=3
1/2x+1/5y=4
but then the answer is a fraction and humans cant be fractions!!!

pl help guys i'll gv 5stars to the correct answer....

2007-12-27 20:22:09 · 10 answers · asked by ♥aesu♥ 1

2007-12-27 20:18:54 · 14 answers · asked by cseanc_79 2

2007-12-27 20:10:20 · 6 answers · asked by i 1

cause i think it's much better to have it separated from the other topics related with mathematics

2007-12-27 19:50:39 · 5 answers · asked by >cArmAyE< 1

was it 1,000 or 10,000? I forgot.

2007-12-27 19:25:42 · 13 answers · asked by Juice 3

2007-12-27 19:23:38 · 17 answers · asked by Sheila A 1

2007-12-27 19:12:19 · 22 answers · asked by Sheila A 1

On your way, your distance from A to B gets cut in half, then in half again, then in half again, then in half again. It keeps getting cut in half an infinite number of times until the halves become microscopic. But no matter how small it becomes, the distance that you have remaining from where you are to where you want to be (point B) can still be cut in half again. Do you ever really get to point B or is there just too many halfway points to cross that you never really get there?

2007-12-27 19:00:28 · 10 answers · asked by pickupman546237 1

a survey in a certain locality reveals that the probability of a man dying after the age of 0.6 and the probability of a woman dying after the age of 60 is 0.5. if a couple comes from this locality, what is the probability that:

a) both will die before the age of 60?

b) either will die after 60?

2007-12-27 18:56:40 · 3 answers · asked by stelzii 1

sin(x+pi/6)-sin(x-pi/6)=1/2

2007-12-27 18:52:56 · 4 answers · asked by Anonymous

2007-12-27 18:44:24 · 11 answers · asked by Sheila A 1

given that g(x) = | 4-x |

find the range of g if its domain is
-3

2007-12-27 18:08:48 · 7 answers · asked by hani 1

seriously.

2007-12-27 17:23:52 · 17 answers · asked by floraclarafreya 2

2007-12-27 17:11:53 · 4 answers · asked by STUDY 3

I've got a large bag of M&Ms, large enough that the supply can be considered infinite. Furthermore, I'll assume that all six colors I observe are in the same quantity. If I take 3 M&Ms from the bag, what is the probability that two, and only two, M&Ms are the same color? What is your reasoning?

2007-12-27 17:10:33 · 9 answers · asked by Tech Dude 5

2007-12-27 17:00:25 · 9 answers · asked by Que 1

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Picture5-1.png

2007-12-27 16:52:45 · 7 answers · asked by Anonymous