Science & Mathematics - 11 January 2007

Dianne took 1 1/2 times as long as Amy to complete an art project. If Dianne needed 9 hours to complete her project, how long did Amy need.

2007-01-11 19:18:47 · 6 answers · asked by Evan S 1 in Mathematics

Find the sequence:
1, 11, 21, 1211, 1231, 131221,......

what's the next number?

10 points for correct answer.

2007-01-11 19:18:12 · 4 answers · asked by monochrome 4 in Mathematics

2007-01-11 19:16:35 · 8 answers · asked by ruvierejale_08 1 in Earth Sciences & Geology

I am really active and dinamic, i don´t like ginecolgy but the resto of medical field likes me a lot, my only defect it´s that i am not very patient which could be mi best choice????

2007-01-11 19:15:24 · 2 answers · asked by Miguel G 1 in Medicine

2007-01-11 19:13:18 · 3 answers · asked by Cheers 2 in Biology

2007-01-11 19:11:54 · 7 answers · asked by StingRay 2 in Astronomy & Space

2007-01-11 19:11:11 · 6 answers · asked by Anonymous in Medicine

I really don't understand how 'scientists' can reconstruct what a human nose looked like. Isn't the nose composed mostly of cartilage and flesh? I have never seen a skull ( I've been to the killing fields in Kampuchia) that ever had anything except a hole where the nose was. How do they really know if Dante's nose had a hook on it?

2007-01-11 19:07:00 · 2 answers · asked by Anonymous in Other - Science

Applications The formula h = -16t 2 + 212 gives the distance a bungee jumper is from the ground for the free-fall portion of the jump, t seconds after leaping off a bridge. We can find the number of seconds it takes the jumper to reach the point in the fall where the 64-foot bungee cord starts to stretch by substituting 148 for h and solving for t. Find t.
My answer was t = 4 however it was wrong heres my work.

148=-16t^2+212
standard form
16t^2-64=0
16(t^2-4)=0
16t=0 t-4=4

answer 4 seconds. I basically followed the example in the book.

second question

Practice Solve the equation.
3z3 - 432z = 0
there should be 3 answers

i only got one correct answer 0
the other two i got were wrong but they were -216 and 72


please help and PLEASE show your work.

oh i almost forgot this one to

Practice Solve the equation.
2x^2 - 9x = -10

i used the quadradic formula and got 2 & -2.5 but thats not right UGH

2007-01-11 19:06:01 · 3 answers · asked by I <3 Animals 5 in Mathematics

dark matter? darkness? i heard that light receding to darkness is at first faster thatn the speed of light but then it slows when something happens>>?

2007-01-11 19:01:52 · 10 answers · asked by yazinazi666 1 in Physics

2007-01-11 18:54:23 · 12 answers · asked by gelo 1 in Other - Science

The fixed operating costs to a team owner of holding a live football match total $80,000. In addition, there is an average cost to the owner of $6 per spectator who attends the match. If each spectator pays $14 for a ticket, how many spectators must attend for the owner to make a profit of $160,000?
A. 10000 B.20000 C.30000 D.40000 E.50000

2007-01-11 18:52:21 · 4 answers · asked by prince u 1 in Mathematics

An electrical motor spins at 1575.0 rpm, its radius is 7.204 cm.

2007-01-11 18:45:45 · 2 answers · asked by Anonymous in Physics

2007-01-11 18:45:22 · 18 answers · asked by juju 1 in Mathematics

Does it have anything to do with reversible and irreversible changes?

2007-01-11 18:44:36 · 9 answers · asked by Honey Badger 1 in Chemistry

A dart gun has a maximum velocity of 8.71m/s.

2007-01-11 18:41:11 · 4 answers · asked by Anonymous in Physics

2007-01-11 18:40:50 · 9 answers · asked by singlensullen 1 in Mathematics

Something is seriously wrong...what is going on?

2007-01-11 18:39:44 · 13 answers · asked by ? 3 in Zoology

A fisherman launches bait off a dock at a 25 degree angle.The bait reached a maximum hieght of 17m.

2007-01-11 18:38:50 · 3 answers · asked by Anonymous in Physics

2007-01-11 18:37:57 · 2 answers · asked by 3.141592653589793238462643383279 3 in Biology

well i live in
India, Kolkata, 700014, etc.
wat's my county ???????? fast plzzzzzz

'COUNTY' NOT 'COUNTRY'

2007-01-11 18:35:44 · 16 answers · asked by Anonymous in Geography

A hobby rocket is launched and reaches 75.5m in hieght an lands
143m from the launch point.

2007-01-11 18:34:13 · 2 answers · asked by Anonymous in Physics

2007-01-11 18:32:00 · 13 answers · asked by third3dynasty 1 in Astronomy & Space

A submarine is at -500 feet, or 500 feet below sea level. The ship is then directed to descend 650 feet, then to ascend 350 feet, then to descend 340 feet, then to ascend 150 feet, and then to descend to the ocean floor which is 1200 feet below sea level.



How many feet was the final descent?

2007-01-11 18:30:01 · 5 answers · asked by gurpreet 1 in Mathematics

1) an asteroid or comet hitting the Earth.
2) The sun becoming a red giant.
3) An explosion from a distant star or some other cosmic event
4)None of the above?

2007-01-11 18:29:23 · 17 answers · asked by Anonymous in Astronomy & Space

Why is it necessary for pollen grains and ovules (eggs) to contain only half the proper amount of DNA?

2007-01-11 18:24:56 · 6 answers · asked by Sarah S 3 in Biology

Just the fack that weer called homosapiens implys that weer all halve gay. I'm perfekly fine w/that. Human answers only please.

2007-01-11 18:24:18 · 20 answers · asked by Naythen 1 in Biology

2007-01-11 18:22:50 · 14 answers · asked by RYAN E 1 in Weather

2007-01-11 18:21:44 · 6 answers · asked by Kaien かいえん 4 in Astronomy & Space

2007-01-11 18:19:02 · 14 answers · asked by Anonymous in Astronomy & Space