Mathematics - 10 October 2007

pls help me.....

2007-10-10 23:42:49 · 12 answers · asked by Anna F 1

2007-10-10 23:36:16 · 2 answers · asked by Anna F 1

ln x + ln(y^2) = 3

2007-10-10 22:53:49 · 3 answers · asked by i<3WL 2

2007-10-10 21:16:28 · 7 answers · asked by Anonymous

I need to make a report on Uses of Mathematics in Management Sciences. Please help me find relevant articles on the internet.

2007-10-10 20:22:46 · 1 answers · asked by Wajahat M 1

The last operation is to reciprocal, reciprocal is the mutliplicative inverse, so it could be called a product.

But reciprocal is dividing the answer into 1, so it could be called a quotient? Yes No? Hmmmm.....

I hate being thick :o(

2007-10-10 20:03:41 · 8 answers · asked by Miss M R Cook 1

Hi I would like to know how to solve the linear system equation x+2y+z=a2 , x+ y + 3z=a ,3x+ 4y +7y =10 how to solve this type of Equation

2007-10-10 19:53:48 · 2 answers · asked by Nur S 1

HOLY CRAP, SO I'VE BEEN WORKING ON HOW TO SIMPLIFY THIS STUFF BUT I DONT UNDERSTANDDD?!!
EVERYTIME I TRY TO ANSWER I COME UP WITH THE WRONG ANSWER!!!!
CAN ANY OF YOU EXPLAIN WHAT TO DO STEP BY STEP :

a. 4(-3x-5)-(10+4x) =
b. -(2-x)-3(6+8x)-12=

i seriously have no clue , my answers are so off so please explain and (tell me why) as clear as possible!!
10 points to beessst answer thanks :)

2007-10-10 19:45:25 · 9 answers · asked by julia m 1

In general, what is the difference between dy/dx and f ` (x)?

How about in this situation: "Find dy/dx" y= (x^3)(sin(5x)) ?

I presume there is no difference.

In what situation do they differ?

2007-10-10 19:26:13 · 8 answers · asked by Theava 2

Solving equations using substitution.

2007-10-10 19:25:42 · 8 answers · asked by Anonymous

Logically, in a win/loss scenario with x number of teams, the average win/loss ratio for x# of teams shoul equal 1 (1 win for 1 loss).

But:
Team 1 = 10-5
Team 2 = 40-10
Team 3 = 2 -15
Team 4 = 3-25
(the fact that the total number of w/l for each team is different doesn't matter...look at it as more of a points for and points against scenario)

The total number of wins is 55 and the total number of losses is 55. The overall ratio of wins to losses is therefore 55:55 or 1:1 or 1.0 wins for every loss.

However, if you take the perspective that Team 1 has a 4.0 (4 wins for every 1 loss) Team 2 has a 2.0, Team 3 has a .13 and Team 4 has a .12.

The average of these ratios (4, 2, .12, .13) is not equal to 1 but it is greater.

I would like some help understanding why this is.

2007-10-10 19:22:03 · 4 answers · asked by John L 2

2007-10-10 19:17:33 · 3 answers · asked by Anonymous

2007-10-10 19:10:52 · 7 answers · asked by alex 1

2007-10-10 19:02:18 · 1 answers · asked by Anonymous

2007-10-10 19:00:25 · 8 answers · asked by Anonymous

4x+y=-5
4x+3y=9

2007-10-10 18:29:40 · 1 answers · asked by a 1

2007-10-10 18:26:23 · 2 answers · asked by techgeek24 1

WHAT DECIMAL PART OF 8 IS 3
WHAT DECIMAL PART OF 1.5 IS 37.5

2007-10-10 18:21:29 · 1 answers · asked by austin 1

do you have a formula for that? example...distance is 30 miles....rate at 65 mph...time is .461538462 ....so what is that converted into time? 46 minutes? or what?

2007-10-10 17:46:38 · 8 answers · asked by Anonymous

sin^(1/2)xcosx-sin^(5/2)xcosx=cos^3x(sinx)^1/2

2007-10-10 17:38:01 · 2 answers · asked by unknown 2

using Lim
h->0

2007-10-10 17:29:05 · 6 answers · asked by BCS 2

2007-10-10 17:22:26 · 4 answers · asked by rosemary M 1

2007-10-10 17:20:13 · 2 answers · asked by Michael 1

A stats prof has noted from past experience that students who do the homework for the course have a 0.90 probability of passing the course. On the other hand, students who do not do the homework for the course have a 0.25 probability of passing the course. The prof estimates 75% of the students in the course do the homework. Given a student passes the course, what is the probability that she or he completed the homework?

2007-10-10 17:19:28 · 3 answers · asked by a.pasternak 2

if you dont want to tell me what the answer is, please tell me how to do this problem. i always have trouble with these.

1) you have $32.14 to spend for a sweatshirt. the sales tax is 5%. what is the most the sweatshirt can cost?

2) you have $6.46 to spend for a dinner. there is no sales tax, but you want to leave a 15% tip. what is the most the dinner can cost?

thankyou!!!

xoxo

2007-10-10 17:18:14 · 8 answers · asked by ? 4

Here's my question:
Find the equation of the plane passing through the point P(4,0,-4) and containing the line
x=2-2t
y=1+7t
z=3+3t.

I cant seem to figure it out. thanks in advance for any help.

2007-10-10 17:09:58 · 4 answers · asked by bob oso 2

1)three times the greatest of three even integers exceeds twice the least by 38. find the integers.

2)the difference of two numbers is 12. two fifths of the greater number is six more than one third of the lesser number. find both numbers.


could you write the equation, define a variable, as well as the answer. i'm sorry this is how i understand problems.

2007-10-10 16:48:53 · 7 answers · asked by Anonymous

2007-10-10 16:47:07 · 2 answers · asked by Bobby Saggy 1

A trough is 5 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the graph of y=x4 from x=−1 to x=1 . The trough is full of water. Find the amount of work in foot-pounds required to empty the trough by pumping the water over the top. Note: The weight of water is 62 pounds per cubic foot.

2007-10-10 16:21:55 · 1 answers · asked by mjs3382 1

2007-10-10 16:04:20 · 6 answers · asked by fdsfdsafdsfs a 1