Science & Mathematics - 6 December 2007

A gym coach must select 11 seniors to play on a football team. If he can make his selections in 12,376 ways, how many seniors are eligible to play?

I am having troubles with this question. Can anyone help me? Thanks.

2007-12-06 05:16:07 · 4 answers · asked by Anonymous in Mathematics

if u say anything about a condom or ill have to report u

2007-12-06 05:11:13 · 3 answers · asked by Anonymous in Botany

2007-12-06 05:08:50 · 2 answers · asked by elly4u2nv 1 in Geography

Due to a lack of funding, the number of students enrolled at City College went from 8000 last year to 5000 this year. Find the percent decrease in enrollment. (Round to the nearest tenth of a percent, if necessary.)

A 160%
B 62.5%
C 37.5%
D 60%

David has $14,000 to invest. He invests $9000 in a mutual fund that pays 12% annual simple interest. If he wants to make at least $2200 in yearly interest, at what minimum rate does the remainder of the money need to be invested?

A 24.4%
B 21.4%
C 20.4%
D 22.4%

P = 2L + 2W; P = 30, W = 6

A 24
B 9
C 15
D 12

2007-12-06 05:06:54 · 8 answers · asked by April M 1 in Mathematics

2007-12-06 05:04:35 · 11 answers · asked by gharris4027 1 in Astronomy & Space

(3a + 4b - c) - (6a - 2b + c)

Please explain this to me and I'll give out 10 points for the best answer! woo.

2007-12-06 05:03:28 · 5 answers · asked by WHAT THE HELL 4 in Mathematics

A few weeks ago I went into my bathroom & not looking down realized I stepped on something wet. Having 8 cats (inside only, don't go out) I figured it was a hairball but when I looked down it was a small pool of faint pink blood w/some splatter all around. I immediately found all of my cats which were all sleeping after just eating & everyone was fine. I washed the rug & didn't think nothing of it until about a week later. I board pets for a living out of my home. One morning I found a boarded cat w/3 small pools of blood & splatter everywhere in his cage. (When I found this on my rug he wasn't here yet & boarded animals do not go in my home!) Here he had a brain tumor that hemorraged & I had to put him down. What in the world was this? A sign? How was I supposed to know what it meant until after the fact? No I do not do drugs and I've never seen Harry Potter either LOL!

2007-12-06 05:01:00 · 16 answers · asked by PAISLEY 3 in Paranormal Phenomena

plz help x

2007-12-06 04:59:52 · 4 answers · asked by Anonymous in Geography

I need a quick release mechanism to release a load of about 20,000 lbs. Ideally the ball bearing clutch type, where a ring holds ball bearings in a groove on the load pin. Sliding the sleeve back allows the ball bearings to move out, releasing the pin.

Does anybody know who sells these, or some other type of load release mechanism? I think special effects people use them a lot.

Thanks
Dave

2007-12-06 04:58:31 · 2 answers · asked by Anonymous in Engineering

1. What is Chlorine's origin?

2. What is a common use of Chlorine?

Thanks a Bunch!

2007-12-06 04:56:43 · 2 answers · asked by Anonymous in Chemistry

Or is it the same size?

2007-12-06 04:53:48 · 3 answers · asked by Chritting 4 in Biology

Consider the function f(x) whose second derivative is f ''(x) = 4 x + 4 \sin (x). If f(0) = 2 and f '(0) = 4, what is f(x)?

2007-12-06 04:51:34 · 2 answers · asked by Anonymous in Mathematics

You would think that the salty runoff produced when the ice and snow melts would seep into the ground and kill the grass or kill fish in the river.

And what about all of the sand? It has to go somewhere too. Doesn't it clog storm drains?

2007-12-06 04:48:00 · 12 answers · asked by Randy G 7 in Earth Sciences & Geology

I need to add these two fractions!

-3/(5 - a) and 5/(a^2 - 25)

I think it has to do with factoring (a^2 - 25)....

2007-12-06 04:44:51 · 6 answers · asked by Anonymous in Mathematics

Please Give Step By Step Instructions In Words On How You Solved It Please..Thanx..

2007-12-06 04:38:51 · 5 answers · asked by Naima 2 in Mathematics

2007-12-06 04:38:15 · 19 answers · asked by Anonymous in Zoology

I came up with an explicit formula of: f(n) = 5*2^(n-1) - 3 as a solution to the recursive sequence: f(n) = 2f(n-1) + 3 for all integers n >= 2 and f(1) = 2. Is there a way to use mathematical induction to verify the "correctness" of my explicit formula?

2007-12-06 04:38:13 · 1 answers · asked by ǝɯɐuɹǝsn ɔıɹǝuǝƃ 3 in Mathematics

x^2 -10x +5 = 0


The answer is, 5 + 2over the sum of the root of 5
--

p.s. that minus sign goes under the plus..

2007-12-06 04:36:09 · 1 answers · asked by da_mexican_05@sbcglobal.net 1 in Mathematics

can you help me out with this question, thanks the help =)

2007-12-06 04:35:11 · 2 answers · asked by Jen 1 in Chemistry

I had my daugher in a stroller in Central Park NYC, and was crossing the park drive, a yellow taxi came around a corner at approximately 35-45 mph and was at least 75 ft away from me when the driver applied his brakes - he would have hit us head on. The car lurched to a stop 25 ft away from us - I think his brakes locked but I'm not sure (nyc cabs have the worst brakes on them from wear and tear), at the moment I saw the car rounding the corner I was prepared to die because I was frozen but something in my mind said stop.

The cab seemed to hit a brick wall and actually shut off and stalled, the driver had trouble re-starting the car and I walked off with my daughter without a care in the world - still alive and not even shaken. This happened at least 12 yrs ago.

Scientist and mathematicians work out the distances and speed for me and see if it's possible that maybe the guy was a good driver with excellent reflexes.

2007-12-06 04:33:18 · 12 answers · asked by bronxgraffitiart 3 in Parapsychology

4sin^2(x/2)cos^2(x/2) = sin^2(x)

thanks a lot!

2007-12-06 04:32:28 · 3 answers · asked by Nate 6 in Mathematics

a-mole
b-liter
c-kelvin
d-second
e-ampere

2007-12-06 04:31:29 · 5 answers · asked by Anonymous in Chemistry

6x^2 +15x = 9

1
The answer is -2 ----- ,but u must show the steps..
2

2007-12-06 04:31:19 · 3 answers · asked by da_mexican_05@sbcglobal.net 1 in Mathematics

(cont.) -ed impedance, and the electromotive force, E, called voltage, is given by the formula E= I (times) Z. Electrical engineers use i to represent the imaginary unit. An electrical engineer is designing a circut that is to have a current of (6-i8)amps. If impedance of the circut is (14+i8) ohms, find the voltage.

2007-12-06 04:31:15 · 4 answers · asked by Anonymous in Engineering

If a layer of sandstone lies on top of a layer of limestone in which a 300-million-year-old fossil is found, and there are no unconformities, the layer of sandstone must be ____.

a. older than 300 million years
b. younger than 300 million years
c. about 300 million years old
d. older than 600 million years

2007-12-06 04:29:57 · 7 answers · asked by Jonathan W 1 in Earth Sciences & Geology

Use the First derivative test to find the critical values of y=(x^(2)-4)^7. Use the First Derivative Test to determine if there are extrema and, if so, what kind?

2007-12-06 04:27:18 · 4 answers · asked by Caramel 2 in Mathematics

me instead?

Thanks

2007-12-06 04:24:11 · 4 answers · asked by Anonymous in Medicine

?????? i understand that their mass sorta hold the galaxy on its orbit, but if so, is it pulling everything in, even though we its not noticeable, should the galaxy really be falling inside, unlike the popular claim that the universe is expanding?

2007-12-06 04:24:03 · 16 answers · asked by mpirumov 1 in Astronomy & Space

x +3y +5z = 20
y - 4z= -16
3x - 2y +9z = 36

2007-12-06 04:20:34 · 8 answers · asked by me y 1 in Mathematics

2007-12-06 04:16:52 · 7 answers · asked by Kenneth George Houdek 3 in Astronomy & Space