Science & Mathematics - 4 February 2007

You are taking a test in which multiple-choice questions are worth 9 points and fill-in are worth 14 points. It takes 3 minutes for each multiple-choice and6 minutes for each fill-in question. Your score is 144 points by using the entire 60 minutes. find how many questons of eachtype you answered correctly. how many multiplue-choice questions did you answer correcly? how many fill-in did you answer correctly?

2007-02-04 17:34:37 · 2 answers · asked by soul2true 1 in Mathematics

2007-02-04 17:33:57 · 1 answers · asked by David D 1 in Astronomy & Space

give me at least 5 substances

2007-02-04 17:28:09 · 4 answers · asked by skyErrSkEe 1 in Chemistry

2007-02-04 17:28:07 · 12 answers · asked by Anonymous in Weather

2007-02-04 17:27:52 · 4 answers · asked by eva 1 in Weather

Is abiogenisis as a hypothesis as well constructed as other hypotheses in the scientific community? Does it have any quantitave aspects to it at all?

2007-02-04 17:26:03 · 4 answers · asked by Roy E 4 in Other - Science

2007-02-04 17:25:42 · 5 answers · asked by hyaki ikari 2 in Astronomy & Space

What sites on the internet or referred book that will help me learn higher derivatives in differential calculus

Please i need answer asap

HELP

2007-02-04 17:25:38 · 2 answers · asked by questions 1 in Mathematics

it is now (-5 F) or (-20.5 C) with wind chills of (-26 F) or (-33 C).....
any ideas on how to warm up when the hot chocolate has you floating and the heat + covers just arent enough?

send me some warm thoughts please. what can i do to keep my mind in a warm place?

2007-02-04 17:23:32 · 2 answers · asked by Anonymous in Weather

2007-02-04 17:22:42 · 5 answers · asked by Al-Gore 1 in Other - Science

(1+tanx)/(sinx + cosx) = secx

please help this is so hard

2007-02-04 17:20:13 · 3 answers · asked by ARB 2 in Physics

2007-02-04 17:19:12 · 4 answers · asked by aida aadzrian 1 in Biology

......Mercuryquakes, Marsquakes, Moonquake.

2007-02-04 17:13:03 · 5 answers · asked by Boo Radley 4 in Astronomy & Space

2007-02-04 17:11:59 · 3 answers · asked by Alex A 1 in Chemistry

1. On average, how long does a species exist before going extinct?
2. What do rocks of the early Triassic show? Why?
3. When and where did the first human-like primates appear? (I know they first appeared in Africa but I don't know about how many millions years ago?)

I have hard time finding answers to these questions. Can someone help me?
Thank you.

2007-02-04 17:10:19 · 3 answers · asked by happybunny 2 in Biology

Oh my gosh!!! when did this happen? I am so confused...

2007-02-04 17:09:24 · 11 answers · asked by Katie 3 in Astronomy & Space

the join pmf of n X n Y is f(x,y)=1/6 0<=X+Y<=2. where X and Y are integer.

(a) skecth the support of X and Y.
(b) find the marginal pmf of f(x) and f(y).

2007-02-04 17:06:15 · 2 answers · asked by myself 1 in Mathematics

nobody cld defined perfectly about the term INFINITY, can i get the perfect answer for this question? is it possible to define infinity in as close as possible?

2007-02-04 17:06:09 · 6 answers · asked by vipul p 1 in Mathematics

2007-02-04 17:04:37 · 1 answers · asked by TJ 2 in Mathematics

2007-02-04 17:00:57 · 14 answers · asked by prathap-b k 1 in Geography

it's said that the average pitch for a male voice is 120Hz and for a female voice is 210Hz... what if a male voice pitch of a male is 121 or 125? is it already considered a high pitch? and what if a female has a 208Hz voice pitch? is that already a low pitch since it's lower than the "average pitch"?

2007-02-04 16:59:51 · 2 answers · asked by nostaglia 1 in Other - Science

2007-02-04 16:59:22 · 6 answers · asked by jean claudoo 2 in Mathematics

from the year i started to contribute.

2007-02-04 16:57:14 · 1 answers · asked by Anonymous in Mathematics

Could anyone please tell me how to test
1. pH value
2. turbbitity
3. [Heavy metal]
4. [Cl]
5. [Mineral]

2007-02-04 16:56:53 · 1 answers · asked by Anonymous in Chemistry

that is (-20 c) with a wind chill of (-34 c).... can you feel the chill from my computer? is it too cold for school yet?

2007-02-04 16:55:10 · 5 answers · asked by Anonymous in Weather

Hi,
please help me understand how to solve this problem:

Let f(x)= (3x^2 - 9x - 12) / (x^2 + 2x -24)

Find:

lim->4 f(x)

Thank you!

2007-02-04 16:54:55 · 9 answers · asked by Anonymous in Mathematics

the largest diamond ever found was 621 g. if the force of gravitaional attraction between the diamond and a person witha mass of 65.0 kg is 1.00 * 10^-12 N, what is the distance between them?

keep gettin the wrong answer, i get like .16 ???

2007-02-04 16:53:59 · 3 answers · asked by Anonymous in Physics

integral of 10dx / (x-1)(x^2+9)

2007-02-04 16:53:14 · 4 answers · asked by akwon 2 in Mathematics

2007-02-04 16:50:33 · 8 answers · asked by Anonymous in Physics

The mass you will use in the lab is in excess of the minimum required. What happens to the unused excess Mg(s)?copper(II) chloride dihydrate is reduced by Mg(s),

a)Nothing happens to the excess Mg(s)

b)Additional HCl(aq) is added and this reacts with Mg(s) to form Mg2+(aq)

c)The excess Mg(s) reacts with the copper compound produced from the original reduction reaction

d)The solution is heated to remove the excess Mg(s)

e)The excess is removed as Mg(s), after all Cu(s) and Mg(s) do not look the same

2007-02-04 16:50:06 · 1 answers · asked by smile 1 in Chemistry