Mathematics - 28 September 2007

2007-09-28 04:38:46 · 10 answers · asked by baby_rost 3

A lorry, a van and a car set off at the same time travelling at a constant speed of 60km, 80km/h and 120km/h respectively. The lorry and the van were travelling from town G to Town H while the car was travelling from Town H to Town G. THe car passed the lorry 2 minutes after passing the van.

a) find the ratio of the distance travelled by the lorry to the van to the car at the moment when the car passed the van?

b) find the distance between town G to Town H?

2007-09-28 04:22:50 · 5 answers · asked by Speed??? 1

please help i'm stuck and i know its soppost to be easy but i am only 21

2007-09-28 04:21:33 · 49 answers · asked by djbum1000 1

Hi, i factorized this thing, and i would like to know if i did correctly and if there is any way to do it.

A=(3-2x)^2-(7x+2)^2
=[3-2x)+(7x+2)][(3-2x)-(7x+2)]
=[3-2x+7x+2][3-2x-7x+2)
=(5x+5)(9x-5)

Thanks


Thanks

2007-09-28 04:17:25 · 7 answers · asked by Anonymous

2007-09-28 04:15:21 · 3 answers · asked by *purple world* 4

showing all work...

Solve for w(t) at t=100sec if dw/dt = 0.025 sec/w + 75 if w(0)=2.75.

2007-09-28 04:13:54 · 1 answers · asked by j2dabizo 1

A commuter airplane starts from an airport and takes the route shown in Figure P3.17. The plane first flies to city A located 175 km away in a direction 30.0° north of east. Next, it flies for 150 km 20.0° west of north to city B. Finally, the plane flies 190 km due west, to city C. Find the location of city C relative to the location of the starting point.

2007-09-28 04:04:51 · 2 answers · asked by Anonymous

maths

2007-09-28 03:43:48 · 12 answers · asked by Anonymous

Well, I recently took my first math test in Geometry and I did not score well on it at all. I feel like I understand the material, but the language in Geometry is so confusing to me at times (i.e. an angle is 30 degrees, twice more than another angle, etc). I have another test coming up and this previous test has really gotten me down. Tests and quizzes count for 65% of our grade so I'm really scared if I screw up on this coming test that I'm on my way to failing Geometry.

Does anyone have any tips on how to conquer Geometry tests/quizzes and math tests in general? I know you shouldn't be nervous, take your time, but I make the little mistakes or I just completely forget it. Please, if anyone has any good suggestions that would be great!

Second, what are some ways to dissect a Geometry problem (i.e. an angle is twice more than another and 20 degrees more, etc.)? I know how to do the algebra, it's just the set-up that screws with me.

Thanks again!

2007-09-28 03:29:19 · 6 answers · asked by pocky_bot 2

2007-09-28 03:17:36 · 1 answers · asked by Anonymous

4x + 7y = -10
3x -7y = -4

2007-09-28 03:01:25 · 9 answers · asked by nickmydog 1

2x -7y = -10
3x +2y= 10

2007-09-28 02:58:44 · 3 answers · asked by nickmydog 1

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

2007-09-28 02:57:46 · 5 answers · asked by nickmydog 1

2007-09-28 02:56:15 · 10 answers · asked by Anonymous

2007-09-28 02:54:25 · 6 answers · asked by Anonymous

2007-09-28 02:32:15 · 2 answers · asked by Anonymous

Which of the following are orthogonal pairs a) 3i+2j
> b) i+j c) 2i-3j d) 7i+j

2007-09-28 02:30:32 · 1 answers · asked by shubra s 1

2007-09-28 02:18:27 · 4 answers · asked by . 1

there are four odd consecutive integers. if the first term added to twice the quanity of the sum of the third and fourth term is equal to the second term squared minus three, find these numbers.

2007-09-28 02:17:51 · 2 answers · asked by Axis Flip 3

Angle A= a. -4/-2 B=-2/2 C=4/-1
Can you please show your work? I don't know how to do this!

2007-09-28 02:16:56 · 1 answers · asked by Kathryn 4

2007-09-28 02:08:19 · 4 answers · asked by . 1

2007-09-28 02:06:30 · 6 answers · asked by . 1

can u tell me what are the three plots points for each equation than tell me were it intercect?

2007-09-28 01:59:26 · 1 answers · asked by Anonymous

why or why not?

2007-09-28 01:55:25 · 5 answers · asked by Nevia 1

the question i guess is pretty easy, and i think i know the answer i just want to be sure....

f(x)= I x I if x =/= (doesn't equal) 0
1 if x = 0

find (lim) f(x)
x>1

2007-09-28 01:49:27 · 2 answers · asked by f4b_4 1

I need help answering this question...I need to show all work. Also, step by step would be appreciated, so I can follow what was being done at each step and easch calculation...thank you!

Thermal neutrons travel at an average velocity of 2200 m/s. Perform a calculation to determine if such neutrons are relativistic.

2007-09-28 01:39:13 · 2 answers · asked by j2dabizo 1

Ive been stuck on this for a day could someone PLEASE help?? PLEASE SHOW WORKING SO I CAN UNDERSTAND!!!

The function 'g' is defined by :

g : x ----> 4/(1+x^2)

a) Give a suitable domain for 'x' so that 'g' is a one-to-one function and state the range of 'g' for this domain.

b) Define an inverse function g^-1 stating its domain and the corresponding range.

2007-09-28 01:28:39 · 1 answers · asked by Anonymous

3=4? solve mathematically

2007-09-28 00:45:26 · 12 answers · asked by Anonymous

I do not have a clue where to begin on solving this and any help that you could give me would be great.
Thanks

2007-09-28 00:35:54 · 12 answers · asked by Anonymous