Science & Mathematics - 21 October 2007

I had a 96.6% in my biology class, and i took a test which i got an 85% on. After this 85% my grade dropped to an 89.8%. How much percent of my total grade would the test have to be for my grade to drop 7%!?

Also, does anyone else think this is completely ridiculous??

2007-10-21 17:41:42 · 2 answers · asked by fadlallah42 1 in Mathematics

2007-10-21 17:40:31 · 9 answers · asked by closure 2 in Mathematics

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/module%20717%20test/Picture2.png

2007-10-21 17:39:40 · 3 answers · asked by Anonymous in Mathematics

The distance around a circle is called the

diameter

circumference

radius

chord

2007-10-21 17:38:10 · 13 answers · asked by Anonymous in Mathematics

2007-10-21 17:36:26 · 15 answers · asked by Anonymous in Biology

If so, what do you think it really was, looking back?

2007-10-21 17:33:33 · 22 answers · asked by Anonymous in Paranormal Phenomena

2007-10-21 17:32:50 · 4 answers · asked by Anonymous in Physics

For the equation given below, evaluate y' at the point (1, 9).

y / [ x - 7y ] = x^4 + 9

so im working on implicit differentials now and i swear it's the one concept that is brainfuckling me. i've finagled my way through a few problems, but im utterly lost on how to do this one.

2007-10-21 17:31:32 · 3 answers · asked by AppleCard! 2 in Mathematics

a.kinases
b.cyclins
c.chromatin
d.microtubules
e.chromatids

2007-10-21 17:30:37 · 3 answers · asked by Anonymous in Biology

or do you like steamed clams?

2007-10-21 17:28:51 · 5 answers · asked by Anonymous in Medicine

2007-10-21 17:26:37 · 14 answers · asked by Cyber Bullying Is Ugly 2 in Mathematics

how do you solve the problem

x squared +6x+9=0

please show step by step.

thank you very much!

2007-10-21 17:21:53 · 8 answers · asked by Anonymous in Mathematics

This is fo my homework. I found out that it's either the hubble telescope or the hubble law. Thank you so much.

2007-10-21 17:19:34 · 4 answers · asked by Anonymous in Astronomy & Space

2007-10-21 17:17:48 · 12 answers · asked by Anonymous in Mathematics

I would like to know if this class called analysis( advanced calculus ) is very very hard. I am taking introduction to advanced mathematics , where these topics are covered: (naive set theory, functions, cardinality, sequences of real numbers and limits. Emphasis on formal proofs.) How hard was the analysis class when you took it? was it like hell ? what about abstract algebra.
I ask this because i dont want to be messing with the wrong major. I like math but when i see the kind of problems that are in those classes , i get a little intimidated.

2007-10-21 17:17:35 · 3 answers · asked by Anonymous in Mathematics

thanks!

2007-10-21 17:15:15 · 9 answers · asked by hellllloooooooo 1 in Astronomy & Space

I have a few questions please answer which ones you know. if you know why can you plz give me a really short reason why (if u don't want to, thats fine, i just need public opinion.) THANK YOU THANK YOU THANK YOU!

1)Memebranes in cells help chemical reactions to occur by:
a)keeping enzymes apart from substrates
b)reducing the energy of activation
c)anchoring enzymes in position for effecient reactions
d) adding lipids to the products
e) b and c

2)If a 2n cell with 16 chromosomes undergoes mitosis, how many chromosomes will each daughter cell have?
a)4
b)8
c)16
d)32
e)64

3)Mechanical Digestion of food is accomplished in humans by:
a)teeth
b)small intestine
c)stomach
d)choices a and c
e)choices a, b, and c

Thanks so, so much- it means the world!!! best answer will be chosen by accuracy, quickness, and explanitory answer :) thanks again =D

2007-10-21 17:13:57 · 7 answers · asked by Hobbit__song 2 in Biology

I have two questions:

1) What evidence is there that carboxylic acids are soluble or insoluble in aqueous solution?
2) What evidence is there that esters are soluble or insoluble in aqueous solution?

EXPLAIN THIS EVIDENCE IN TERMS OF MOLECULAR STRUCTURE

your help will be greatly appreciated!!!!!

2007-10-21 17:12:19 · 2 answers · asked by liilee89 1 in Chemistry

2007-10-21 17:08:39 · 1 answers · asked by UHstd 1 in Biology

2007-10-21 17:07:20 · 2 answers · asked by Anonymous in Astronomy & Space

2007-10-21 17:06:37 · 7 answers · asked by UHstd 1 in Biology

2007-10-21 17:01:08 · 6 answers · asked by Lionelmessi19ig6 2 in Chemistry

Can you think of anything to comapre it with?
why?

like what I said for Cell Membrane was: just like a ticket checker at the airport, the cell membrane regulates what goes in and out of the cell.

thanks so much I need answers really bad this is due tomorrow. =D

2007-10-21 16:58:36 · 7 answers · asked by Kate <3 3 in Biology

Ionization energy is defined as the minimum energy required to remove an electron from the ground state (n0) to infinity (n∞). Determine the wavelength of radiation required to ionize the hydrogen electron from the n = 2 energy level. Calculate the energy (Joules) associated with this photon. (1 cm-1 = 1.986 x 10-23 J)

2007-10-21 16:58:17 · 1 answers · asked by newtype603 2 in Chemistry

1)what is the difference between saturated and unsaturated fats?
2)what are four types of lipids?
3)what types of sugars are cellulose, glycogen, and starch?
what is monosaccharid and polysaccharide? give one example of each.
4)what are the 4 compounds that make up all living things?

2007-10-21 16:58:13 · 4 answers · asked by Dare to ask? 3 in Biology

OK..hypothetically...a man's spirit was talking to and telling a doctor to do what he wanted him to do.That's not possession...but influence from a spirit. Do you think that could be happening to the people in the news who are doing all these awful things that are happening in colleges etc.?

2007-10-21 16:56:27 · 4 answers · asked by Deenie 6 in Paranormal Phenomena

I was just reading an article from howstuffworks about parallel worlds and it seems very plausible but you don't hear a lot about the theory

2007-10-21 16:55:39 · 7 answers · asked by the_general64 1 in Physics

I remember from class that we learned how to do these but there were cases where you had to use cramer's rule. anyways...I'm stuck on this one because I expanded it and then I didn't know what to do. I can't find any examples like that in my notes. I need to know what to do next or if I should have used the dx, dy, dz thing. the problem is

a 0 2 1
b 1 3 0
c 0 1 2
d 1 0 1

thanx!!!!!!!!!!!

2007-10-21 16:51:47 · 6 answers · asked by angelicasongs 5 in Mathematics

1. Solve the formula 3x-8y=10 for y
2. Solve I x I = 5.5 in terms of x
3. Solve the equation 4x - 3(x - 3) = 6

2007-10-21 16:50:56 · 9 answers · asked by austin 1 in Mathematics

please show how to solve with steps
_ __
a.(-2+\ / -8) + (5- \ / -50)


( \ / is square root)

2007-10-21 16:46:43 · 14 answers · asked by jason 1 in Mathematics