Mathematics - 24 September 2006

please answer this

2006-09-24 08:48:22 · 14 answers · asked by Tom B 1

2006-09-24 08:31:22 · 6 answers · asked by poetic_lala 5

I can't figure out how to get the answer for this constant of proportionality. HELP !!!

2006-09-24 08:23:42 · 1 answers · asked by heather d 2

help with this problem please...a spherical raindrop evaporates at a rate proportional to its surfacce area. write a differential equation for the volume of the raindrop as a function of time?

2006-09-24 08:16:11 · 2 answers · asked by Anonymous

How can you get 2 x 5 - 1/2 x 10 x 9 to equal 45? If it can, can you tell me how and show me all the work? Thank you.

2006-09-24 07:59:25 · 7 answers · asked by Jae 2

Write a recursive formula for each sequence. Use U0 for the first term given...

0, 20, 36, 48.8,....

2006-09-24 07:57:42 · 2 answers · asked by Anonymous

please explain any and all ideas

2006-09-24 07:50:31 · 10 answers · asked by blahhhaha 3

explain details, please

2006-09-24 07:49:46 · 3 answers · asked by ck s 2

What are the highest common factors of 56 and 84????

2006-09-24 07:39:09 · 11 answers · asked by pushpa 1

how do you do this problem?

A hockey team played n games, losing four of them and winning the rest. The ratio of games won to games lost is?

2006-09-24 07:33:31 · 12 answers · asked by princesschristine91 1

how do you do this problem?

Sterling silver is made of an alloy of silver and copper in the ratio of 37:3. If the mass of a sterling silver ingot is 600 grams, how much silver does it contain?

2006-09-24 07:32:40 · 3 answers · asked by princesschristine91 1

2006-09-24 07:32:18 · 8 answers · asked by jame2226 1

An airplane is flying north at 500km/h. It makes a gradual 180degr. turn at constant speed, changing its direction of travel from north through east to south. The process takes 40s. The average acceleration of the plane for this turn in km/h.s is:
a 12.5 km/h.s, north
b 12.5 km/h.s, east
c 12.5 km/h.s, south
d 25 km/h.s, north
e 25 km/h.s, south


Ok, I know I have a=v^2/r and T=2pir/v to work with.
40 sec = 0.011 hr is half a revolution (180degr) and since T is a hole revolution I think T is 0.0222. Putting that into the equation, I get 1.768km for r.
I tried working the problem backwards by plugging in the answers but I just don't get it. (maybe I'm doing omething wrong with the units since a is normally m/s^2 and thesy give me the answer in km/h.s?)
Also the direction, I would say if you travel north and make a turn east and end up going south, the average direction is east, does that make sense?

2006-09-24 07:26:04 · 2 answers · asked by dutchess 2

I can't seem to figure out where the left most vector starts. I have drawn a diagram, you can view it by going to the following link

http://individual.utoronto.ca/asadzaman/problemdiagram.jpg

2006-09-24 07:24:53 · 3 answers · asked by Asad Z 1

2006-09-24 07:22:46 · 8 answers · asked by jame2226 1

2006-09-24 07:21:11 · 10 answers · asked by jame2226 1

is not replaced so what is the probability of two marbles in a row that r not purple

2006-09-24 07:19:43 · 5 answers · asked by loooooio l 1

2006-09-24 07:19:22 · 4 answers · asked by jame2226 1

33.
The length of a rectangle is 8 in. more than twice its width. If the perimeter of the rectangle is 64 in., find the width of the rectangle.

A) 10 in. B) 7 in. C) 8 in. D) 9 in.

2006-09-24 07:19:00 · 6 answers · asked by pjaxdriver13 1

2006-09-24 07:17:21 · 7 answers · asked by jame2226 1

2006-09-24 07:12:24 · 2 answers · asked by Bre G 1

29.
The product of two consecutive positive even integers is 360. Find the integers.

2006-09-24 07:10:02 · 4 answers · asked by pjaxdriver13 1

The 2 vectors 3i-7j (no k) and 2i+3j-2k define a plane (its the plane of the triangle with both tails at one vertex and each head at one of the other vertices).
Which of the following vectors is perpendicular to the plane?
a 4i+6j+13k
b -4i+6j+13k
c 4i-6j+13k
d 4i+6j-13k
e 4i+6j

I did the cross product and got
=i(AyBk-AkBy)+j(AkBx-AxBk)+k(AxBy-AyBx)
=14i+6j+23k

How do I go from here?

2006-09-24 07:09:38 · 2 answers · asked by dutchess 2

I'm really having a difficult time learning Managerial Accounting. Is there an easier way to learn or could somebody help me? I basically need to know EVERYTHING! HEEELLLLLPPP!!!

2006-09-24 07:05:53 · 2 answers · asked by sweetieface19 2

2006-09-24 07:00:11 · 1 answers · asked by loooooio l 1

Q: 2a + 5b

a = 4i + 3j
b = 2i - j

A: From what I read since I'm a bit rusty:

(a+b) = (a1+b1)i + (a2+b2)j + (a3 + b3)k

for:
(2a + 5b) = (2xa1+5xb1)i + (2ax2+5xb2)j + (2xa3 + 5xb3)k

is this method correct?

2006-09-24 06:58:39 · 3 answers · asked by Anonymous

how do you calculate volume from mass and density and density from volume and mass?

2006-09-24 06:54:45 · 7 answers · asked by George B 2

2006-09-24 06:54:04 · 3 answers · asked by toni41sanders 1

Is this in an algebraic form? I got this wrong on a test, and somehow I came up with -16.08 . Problem is, this test was 4 weeks ago, and I did not show my work. What did I do wrong?

2006-09-24 06:50:22 · 4 answers · asked by Anonymous

probibility of two blues marbles in a row this is based on my first question

2006-09-24 06:43:30 · 2 answers · asked by Anonymous