Science & Mathematics - 28 August 2007

18(2 1/9) helppp
5(6m + 4n - 3n)

2007-08-28 10:26:36 · 6 answers · asked by fabian_pacheco7 2 in Mathematics

The base of the prism is vertical equilateral triangle of side 1 + √3, and its depth is 1.
[The three balls can just tightly fit inside such prism , touching each other and the faces of the prism]

All surfaces are frictionless.
What is magnitude of force applied by the balls to the bottom face of the prism?

--/\
-/O\
/OO\
^^^^^^

2007-08-28 10:25:05 · 2 answers · asked by Alexander 6 in Physics

I need help with this.. It is a finance problem in algebra form

EBIT/150,000 = (EBIT - 150,000) / 60,000

The Solutions says EBIT = 250,000

Can someone show me how to do this
I know its simple algebra, but im having a dumb moment

2007-08-28 10:23:31 · 2 answers · asked by Tedog1985 1 in Mathematics

Okay, we didn't have time in class today to get to this section but have to do the homework. The question is...

In each case (I'm gonna give 2) write the following angles between 0 and (pi/2) inclusive or between 0 degrees or 90 degrees, as appropriate. For example, sin (5pi/4) = -sin (pi/4).

I do not understand what this is actually wanting me to do. Two of the problems are...

a) sin (3pi/2) Would that be -sin (pi/2) ???


b) sin 300 degrees. I have no idea


If you know any websites, that may be better than just giving the answer. Thanks

2007-08-28 10:22:32 · 4 answers · asked by Anonymous in Mathematics

2007-08-28 10:16:40 · 3 answers · asked by Anonymous in Zoology

will it lower the temperature of the air? I know that areas of land around large bodies of water stay cooler, simply because water can absorb large amounts of heat without changing temperature. So by leaving bowls of water around the house in the morning, will this decrease the temperature in the house significantly later in the day, as it heats up?
I know there are probably calculations I could do as well, if anyone knows them....
thanks!

2007-08-28 10:14:44 · 11 answers · asked by Anonymous in Weather

I need a figure or drawing of somthing with two lines of reflectional symmetry with no rotational symmetry

2007-08-28 10:14:08 · 2 answers · asked by mr.jeremy 2 in Mathematics

the problem i'm on right now is

5/8+3/4x=1/16

i just need to solve it, i forget how, help :) thanks!

2007-08-28 10:14:04 · 8 answers · asked by girl 1 in Mathematics

web toed freak

2007-08-28 10:13:46 · 3 answers · asked by Anonymous in Weather

Melatonin is a hormone produced by the brain to make you sleep. My son sometimes has trouble sleeping due to a disrupted sleep cycle and was prescribed melatonin about five years ago. His doctor now says that this is a "proscribed" drug.

What does that meaan and can you still get melatonin?

2007-08-28 10:07:49 · 6 answers · asked by The Red Fool 2 in Medicine

2007-08-28 10:07:10 · 1 answers · asked by Jesse B 2 in Astronomy & Space

2007-08-28 10:06:34 · 3 answers · asked by Anonymous in Mathematics

A. Bodies directly surrounding the body
B. Temperature of the body

C. Material composing the body

D. Length of the body

2007-08-28 10:04:55 · 5 answers · asked by jasnyne k 1 in Engineering

I'm pretty embarrassed about not knowing the answer to this right off the bat. But it is the first day of school, so I suppose this is forgivable. Anyway:
Two cars leave Springfield at noon and travel in opposite directions. If one car travels r mi/h and the other travels 1.5 times as fast, how far apart are the cars at 4:00 p.m.? Give the answer in simplest form in terms of r.
Please help me and explain how this is done so I will have something to base further studies of distance problems off of. Thank you.

2007-08-28 10:04:21 · 5 answers · asked by Dave 2 in Mathematics

2007-08-28 10:04:13 · 4 answers · asked by dada 1 in Mathematics

Would it be possible to make a steel house, not a steel reinforced house but a steel boxed shape with windows and doors cut out and cladded with wood so that it looks nice. Surely it would be very safe and if it got caught up in a landslide you can just sit it in and enjoy the ride.

2007-08-28 10:03:28 · 9 answers · asked by willow 6 in Engineering

2007-08-28 09:58:01 · 6 answers · asked by sun_shine 1 in Biology

Since there is an absolute limit on velocity, it implies quantised distance and time. from this, if point B is directly between point A and C in space, why does on have to go through point B in getting from A to C. What is the role of matter in determining the associations of points of space? And can these associations are viewed as information? Since time cannot be observed without memory does this mean that time does not really exist without applications of energy or matter (which are the recording mechanisim of this universe). Will this also mean that without matter it will be possible to move directly from point A to C without traversing the inbetween.

2007-08-28 09:56:51 · 2 answers · asked by tapiwa m 2 in Physics

I want to know exactly how many days until July 20, 2011. Help please!!
Thanks
-Jasmine

2007-08-28 09:56:31 · 4 answers · asked by Anonymous in Mathematics

This is the math problem: 6.4x10^6 meters + 1.7x10^6 meters + 3.8x10^5km

2007-08-28 09:54:01 · 4 answers · asked by Anonymous in Mathematics

2007-08-28 09:52:26 · 4 answers · asked by jake C 2 in Physics

I know it has something to do with gravity, but if someone could explain I would be very grateful. Thanks

2007-08-28 09:50:32 · 30 answers · asked by jo2004uk2004 2 in Astronomy & Space

Except for the formation of the Internet, I see little use for quarks, dark matter and the Higgs Boson in my daily life.
Am I missing a trick or could the billions already spent, been used for a practical use e.g. Cancer cure or developing the third world.

2007-08-28 09:47:35 · 12 answers · asked by anteatersrus 3 in Physics

how do i do this math problem, u dont have to give the answer but just tell me how to do it
The capicity of an elavator is either 20 children or 15 adults. If
12 children are currently in the elavator, how many adults can still get in?

also theres this problem
there are eight more girls then boys in high school math club. The clun has a total of 44 members . How many biys and how many girls are there?

and heres another but i would like it if someones checked to see if its right

at the conclusion of a soccer game whose two teams included
11 players each player on the winning team "gave five" to each player on the losing team. Each player on the winning team also gave five to each other player on the winning team. How many fives were given?
is it 22? if not how to do this problem?

2007-08-28 09:46:46 · 7 answers · asked by heart 2 in Mathematics

2 is the answer I am getting. Is that correct

2007-08-28 09:45:17 · 11 answers · asked by Anonymous in Mathematics

I cannot figure out this problem:

all under the radical sign/square root

0.0429^2 -(minus) 0.0183^2

2007-08-28 09:43:34 · 2 answers · asked by dan56458 2 in Mathematics

2007-08-28 09:43:11 · 4 answers · asked by dj 1 in Mathematics

a cylinder (mass = 7kg radius=0,15m height = 0,12) is floating in water.

oil is added so that it is floatin between the oil and the water.

i want to know how much of the height of the cylinder is in oil??

method please.Thanks in advance

2007-08-28 09:38:03 · 1 answers · asked by Anonymous in Physics

3X^2 +27X + 54

(3X+ ?) (X+?)

I cannot figure this out, what goes where the ? marks are
thanks if you can help. i am taking a college algebra clep test on friday and am studying.

2007-08-28 09:35:42 · 5 answers · asked by Boo Radley 4 in Mathematics

On the night of September 31, 2006?

2007-08-28 09:35:25 · 6 answers · asked by a kinder, gentler me 7 in Geography