Mathematics - 25 September 2006

2006-09-25 08:55:06 · 5 answers · asked by swamarama 1

2006-09-25 08:51:28 · 16 answers · asked by Anonymous

2006-09-25 08:51:14 · 9 answers · asked by cak 1

2006-09-25 08:50:53 · 21 answers · asked by cak 1

2006-09-25 08:50:24 · 7 answers · asked by cak 1

2006-09-25 08:49:52 · 6 answers · asked by cak 1

2006-09-25 08:47:07 · 14 answers · asked by Texas Boy 213 1

1) the density of a gold is 19.32 g/mL. if sample has a volume of 48.9 L, wut's the mass?

2) find the volume in dm^3 of a sample aluminum if density is 2.699 g/mL n mass is 26 g.

please walk me through both or at least both questions. ur help is greatly appreciated!!

2006-09-25 08:33:53 · 6 answers · asked by Anonymous

x-y=6
xy=4
pls solve simultaneous equation , give answer in simplest surd form

2006-09-25 08:33:50 · 13 answers · asked by GANGSTA PANGSTA 1

An Iceboat sails across the surface of a frozen lake with constant acceleration produced by the wind. At a certain instant, the boat's velocity is V_1 = (6.30 m/s)i^ +(-8.42 m/s)j^. Three seconds later, because of a wind shift, the boat is instantaneously at rest. What is it's average acceleration for this 3 second interval? Explain.

i^ = i hat, j^ = j hat

2006-09-25 08:32:33 · 2 answers · asked by Anonymous

2006-09-25 08:07:52 · 7 answers · asked by Byron N 2

A train moving at a constant speed of 60.0 km/h moves east for 40.0 min. then in a direction 50.0 degrees east of north for 20.0 min, and finally west for 50.0 min.
What is the average velocity of the train during this trip?

2006-09-25 07:51:51 · 7 answers · asked by Anonymous

Thanks for all your help on simultaneous equation's. Though I am still stuck on how do you know weather to add or subtract a simultaneous equation. Here is a couple of example's. 5x + 7y = 12 3x + 7y = 10 and 33x + 23y = 56 35x -23y =13. There is no need to solve these equation's if you could just give me a good explanation of how I would know weather to add or subtract them.

2006-09-25 07:47:52 · 4 answers · asked by helen y 1

You are in a car for a ride, and take the following course:
50 km/h for 2.0 min, turn 90 degrees to the right, 20 km/h for 4.0 min, turn 90 degrees to the right, 20 km/h for 60 seconds (1.0 min), turn 90 degrees to the left, 50 km/h for 60 seconds (1.0 min), turn 90 degrees to the right, 20 km/h for 2.0 min, turn 90 degrees to the left, 50 km/h for 30 seconds (0.5 min).

At this point, how far are you from your starting point? Also, in what direction relative to your initial direction of travel are you?

2006-09-25 07:46:11 · 3 answers · asked by Anonymous

the integral of (sqrt(64-x^2))/x dx

having trouble with it, tried both u sub and parts and any help in cracking this one would be greatly appreciated

2006-09-25 07:40:16 · 3 answers · asked by Anonymous

2006-09-25 07:38:42 · 2 answers · asked by candice 2

2006-09-25 07:34:25 · 6 answers · asked by Anonymous

2x+2y=7
x²-4y²=8

2006-09-25 07:31:31 · 10 answers · asked by GANGSTA PANGSTA 1

r=density
s=acceleration
F=height

r = 1.03 x 10 ^ 3 kg m^ -3
s = 9.8m s ^ -2
F = 145cm

calculate Ew SI unit

2006-09-25 07:21:28 · 8 answers · asked by mitch 1

2006-09-25 07:08:21 · 21 answers · asked by BaD mAn R 1

Dung Nguyen is considering refinancing his home at a lower interest rate. He has an 11.875% mortgage, is presently making mo nthly principal and interest payments of $510, and has 20 years left on his mortgage. B/C interest rates have dropped, CMC is offering him a rate of 9.5% which would result in principal and interst payments of $420.50 for 20yrs. However, to get this mortgage, his closing cost would be $2500.00
A) How many months after refinacning would he spend the same amount on his new mortgage plus closing cost as he would have spent on the original mortgage?
B) If he plans to spend the next 20 years in the house, would he save money by refinancing?

2006-09-25 07:03:53 · 5 answers · asked by Anonymous

Here's the problem, word for word:
Distilled white vinegar purchased in supermarkets generally has a 5% acidity level. Chef Judy marinates her veal in a special 8% vinegar that she creates herself. To create the 8% solution she mixes the 5% with a special 12% she purchases by mail. How many ounces of the 12% vinegar does she need to add to 40ounces of the 5% vinegar to get the 8% vinegar?

2006-09-25 07:00:39 · 6 answers · asked by Anonymous

2006-09-25 06:52:49 · 11 answers · asked by poetic_lala 5

My friend said Jeopardy had a "Math Jokes" category recently. We want to know what some of the jokes were in this category.

2006-09-25 06:40:41 · 1 answers · asked by cmsb705 5

the distance from the land's end to jhon o'groats is 1400 kilmetres.
1] f i walked 2 meters every second,how ong would it take me to walk from land's end to jhon o'groats without stopping?

2]if i start at 8 am on the first moring and rest each night between 10pm and 8 am the followin moring,how long will it take?

2006-09-25 06:27:57 · 9 answers · asked by mrs 2

I have problems with the homeworks mathematics. the question is this: Solve and check this problem: 8x-7(3-x) = 5(4+3x)-41?

2006-09-25 06:26:37 · 6 answers · asked by Dea Elmas@yahoo.com 1

Eg:0/23=0
23/0=infinite
0/0=??

2006-09-25 06:21:15 · 21 answers · asked by peter 1

2/x + 5/(x-1) = 6

(4n+2)/3 + 1 = 2/n

2006-09-25 06:17:03 · 5 answers · asked by mawi 2

I saw on www.aquarelle.co.uk that for a bouquet having a diameter of 30 cms one needs 32 roses, for one of 25 cms: 27 roses and for one of 35 cms in diameter 37 roses.
How do I determine the diameter for a bouquet of 12 flowers? I used a proportion formula like this 25/27=x/12 and I get only aproximate values of 11.

2006-09-25 06:11:53 · 5 answers · asked by Marushka 1

1000-2500 = 0
1900-2500 = 0
2500-2500 = 0
2501-2500=1
2900-2500=400
Also, can this be done in Excel?

2006-09-25 06:08:05 · 4 answers · asked by Justin 2