Science & Mathematics - 28 January 2007

2007-01-28 12:50:22 · 2 answers · asked by ibid 3 in Biology

If it takes ten minutes to fill 5/12 of a hole, how many minutes will it take to fill the rest of the hole at this rate?

2007-01-28 12:50:17 · 12 answers · asked by Ze'ev X 1 in Mathematics

I asked this question b4..but incorrectly asked about VOLUME instead of DENSITY. My bad.

Jupiter? Earth? The Moon? or The Sun?

2007-01-28 12:49:23 · 3 answers · asked by Anonymous in Earth Sciences & Geology

Given: WXYZ is a rhombus with diagonal WY and XY

Prove: Area ABCD= 1/2 h(b1+b2)

please help!

2007-01-28 12:49:18 · 3 answers · asked by So Cal Cory 2 in Mathematics

2007-01-28 12:49:00 · 8 answers · asked by Carrino 1 in Engineering

Does this limit exist?

2007-01-28 12:48:39 · 4 answers · asked by joe s 1 in Mathematics

i need to know this to solve a problem please help!

2007-01-28 12:46:56 · 5 answers · asked by Anonymous in Mathematics

2007-01-28 12:46:30 · 1 answers · asked by Karina 1 in Biology

What are the oxidations sates of the transition metal ion in each of the following:
[Co(H20)6]^3+, [Cr(H2O)4(Cl)2], and [Os(NH3)2(Cl)2]SO4

Please help and explain!!!!

2007-01-28 12:42:36 · 5 answers · asked by Anonymous in Chemistry

2007-01-28 12:41:06 · 8 answers · asked by Kat B 1 in Other - Science

i got a d in algebra 2 trig. I took algebra 2 over the summer. So does the alegebra 2 overshadows algebra 2 trig. Or i have to take algebra 2 trig over again to have the grade replaced?

2007-01-28 12:40:45 · 2 answers · asked by Adam d 1 in Mathematics

Isn't that why they commit suicide more often?

2007-01-28 12:40:33 · 15 answers · asked by Jerse 3 in Medicine

Can you figure it out? ;)

2007-01-28 12:38:44 · 10 answers · asked by chrissyy 1 in Mathematics

i dont think i can work with reptiles like snakes, rats, alligators etc.

2007-01-28 12:37:26 · 8 answers · asked by Puneet S 1 in Zoology

ok, i have to solve for x;
lnx+ln(x+1)=2

i did the inverse of ln, e^x, to both sides and solved for x like any other algebraic equation.

though, i'm not getting the correct answer. i missed the classroom explanation on this section and the book doesn't provide examples for questions like these.

can someone please explain?
thanks in advance.

2007-01-28 12:36:11 · 9 answers · asked by alexie. 4 in Mathematics

does urine contain water, salt and waste? what else does it contain?

2007-01-28 12:34:52 · 6 answers · asked by avalentin911 2 in Medicine

If Carol can finish a job in 5 hours and Steve can finish the same job in 10 hours, how many minutes will it take both of them together to finish the job?

2007-01-28 12:34:39 · 16 answers · asked by Ze'ev X 1 in Mathematics

2007-01-28 12:32:59 · 5 answers · asked by ashish s 1 in Engineering

Adult tickets for a play cost $18 and child tickets cost $8. If there were 21 people at a performance and the theater collected $288 from ticket sales, how many children attended the play?

Solve the system by addition. 3x + 2y = –8,
x – 4y = 16

2007-01-28 12:32:58 · 3 answers · asked by love_to_please_my_man 1 in Mathematics

Match the descriptions with the names and symbol/formula of a Group 5A(15) element/compound.

1.)__Element(s) essential in plant nutrition
2.)__Phosphorus-containing water softener
3.)__Hydride produced at multimillion-ton level
4.)__Hydride used to manufacture rocket propellants and drugs
5.)__Amphoteric hydroxide with a 5A element in its' +3 oxidation state
6.)__Two examples of an odd-electron molecule
7.)__Element that is an electrical conductor

a. ammonium, NH 3
b. nitrogen and phosphorus, N & P
c. hydrazine, N 2H 4
d. nitrogen monoxide and nitrogen dioxide, NO & NO 2
e. diarsenium trioxide, As 2O 3
f. sodium tripolyphosphate, Na 5P 3O 10
g. bismuth, Bi

2007-01-28 12:31:41 · 2 answers · asked by Cupcake 2 in Chemistry

2007-01-28 12:30:32 · 11 answers · asked by shakespeareslady2002 2 in Zoology

than not that two people share the same birthday?

2007-01-28 12:30:31 · 7 answers · asked by pajaracorarosoy 1 in Geography

discribe the shape and give the bond angle of molecule CH4 methene

2007-01-28 12:30:29 · 3 answers · asked by Anonymous in Chemistry

Okay so i have had my ears pierced but they always ended up getting infected and i had to take them out. Sombody told me because the earings were too small... in other words my earlobes are kinda thick. So now i have a knot in one of my ears so idk how to get the knot out... i also wanna get my ears pierced again. Anyone have these problems?? Lemme know thanks.

2007-01-28 12:29:44 · 2 answers · asked by georgia_gurl345 2 in Biology

i was thinking you could use it to launch rockets farther into space... any other good ideas why?

2007-01-28 12:29:32 · 4 answers · asked by Anonymous in Astronomy & Space

2007-01-28 12:28:24 · 3 answers · asked by Anonymous in Chemistry

2007-01-28 12:28:18 · 13 answers · asked by Leslie P 1 in Mathematics

2007-01-28 12:28:06 · 5 answers · asked by Anonymous in Biology

2007-01-28 12:27:50 · 9 answers · asked by Carrino 1 in Engineering

when the brakes lock? (This question is typical on some driver's license exams.)

2007-01-28 12:27:34 · 6 answers · asked by Drew 2 in Physics