Science & Mathematics - 19 August 2007

2007-08-19 08:41:01 · 3 answers · asked by Anonymous in Physics

1. sin x = 1/2
2. cos^2x= cosx
3. 2cosx + sqrt3=0
4. 4sin^2x=1
5. 2sin^2 x + sinx=1
6. cos^2 x + 2cosx=3
7. 2sin x cos x +sin x=0
8. 8cos^2 x - 2cos x=1
9. sin^2 x - cos^2 x=0

2007-08-19 08:40:02 · 3 answers · asked by Twiggs 1 in Mathematics

please explain

2007-08-19 08:38:35 · 2 answers · asked by fbell92 1 in Mathematics

http://www.astronomy.com/asy/default.aspx?c=a&id=4744
with a normal telescope? Probably not huh. If not, then what kind of things would I be able to see. Im starting to really get into astronomy and want to buy a telescope.

2007-08-19 08:34:29 · 9 answers · asked by jessay 2 in Astronomy & Space

i want to try and under stand the daily readings which are given on the news.

2007-08-19 08:32:16 · 2 answers · asked by CLIVE W 1 in Physics

Using four 4s find the number 13.

E.g- finding number 5- 4 x 4= 16. 16+4=20. 20divided by 4=5

You can use any mathematical term except squared.

2007-08-19 08:29:05 · 7 answers · asked by Anonymous in Mathematics

2007-08-19 08:23:51 · 2 answers · asked by curiouslyclueless 1 in Physics

I mean, if intelligent design is true, then it doesn't seem very intelligent to make people so sensitive in non-essential parts of their body, like their teeth and under their nails...and leave vital parts like their brain without sensation. Wouldn't it be more intelligent to give us teeth like sharks, that grow after the old ones fall out, rather than giving us only two sets?

And if evolution is true, how come we still only get two sets of teeth, and painful ones at that, after all those centuries of the survival of the fittest? What on earth is the evolutionary advantage conferred by toothache? I mean I can understand why your finger feels pain--so you won't leave it in the fire or whatever. But your teeth?

Maybe they're both wrong--the theists and the evolutionists-- and it was aliens who started the whole thing (ones with a perverted sense of humor perhaps...)

2007-08-19 08:22:59 · 28 answers · asked by 2kool4u 5 in Biology

2007-08-19 08:21:09 · 8 answers · asked by allie 2 in Astronomy & Space

2sin^2θ = 1

tan^2θ - tanθ = 0


plz help i dont understand how 2 do these!! plz show steps thanks!!!!

2007-08-19 08:19:57 · 6 answers · asked by Anonymous in Mathematics

2007-08-19 08:18:24 · 9 answers · asked by Phyched4Christ 1 in Mathematics

I've got 3/4 of the assignment done but these ones are killing me. Any help would be greatly appreciated!
21. solve: 8x/7 - 5 = 6x/7-1

31. An airplane covered 23 miles of its route while dcreasing it's altitude by 19000 feet. Find the slope of the arplane's line of decscent.

33. Write the equation of the line that passes therought the point (-2,10) with a slope of -4.

40. A home-based company produces both hand kintted scarces and sweaters. The scarve take 2 hours of labor to producae and the sweaters take 14 hours. The labor available is limited to 40 hours per week and the total production capacity is 5 items per week. Write a system of inequalites representing this situation where x is the number of scarves and y is the number of sweaters.


THANK YOU!

2007-08-19 08:13:12 · 6 answers · asked by Get a life 3 in Mathematics

how do i convert grams to kilograms manually? all i can find on the internet is do it for you, but i need to know.

2007-08-19 08:12:12 · 10 answers · asked by #10♥Eli Manning....my hero☺ 2 in Other - Science

a. Hooke
b. Steno
c. Wallace
d. Lamarck

2007-08-19 08:11:37 · 4 answers · asked by Ha Ha 1 in Botany

Evalute the integral.

dx/49+4x^2 upper limit 3, lower limit 1

2007-08-19 08:03:55 · 6 answers · asked by Anonymous in Mathematics

If f(x) = (x^2)-4 and g(x) = √(2x+4), determine
1. f(3)
2. f(x) = 0 when x = ?
3. f(g(4))
4. f(g(x))
5. Domain of f(g(x))
6. g(f(0))
7. g(f(a+2))
8. f^-1(x)
9. Is the inverse of f(x) a function? If its not, how could the domain of f be restricted to make its inverse a function?

Thanks so much for the help in advance.

2007-08-19 07:59:10 · 2 answers · asked by jumba 1 in Mathematics

and i got B at electric circuits 1 shall i continue in my major or its better to change it

2007-08-19 07:57:37 · 9 answers · asked by modalmasri 2 in Engineering

Solve the system by substitution.
7x + 6y = 6
-4x - 4y = -4


I came up with (0,2)
Do you multiply 7x6=42 subtract 36 = 6-4 =2?

2007-08-19 07:55:37 · 5 answers · asked by sexyguy20175 1 in Mathematics

2007-08-19 07:54:20 · 11 answers · asked by Anonymous in Mathematics

i need to know what's in vinegar,toothpaste, and ketchup that can clean silver or any kind of jewelry or even coins. help please. thanks.

2007-08-19 07:48:54 · 3 answers · asked by Anonymous in Chemistry

Does anyone know of a spell for protection/ blessing . I buy items at auctions and I want to be sure that i put a spell on items before i resell them or give them away. i need very specific information though....

2007-08-19 07:48:12 · 14 answers · asked by Anonymous in Paranormal Phenomena

Would you accept them like anyone else?
Would they be stronger and hairier than humans, but smarter than gorillas?

2007-08-19 07:45:33 · 5 answers · asked by Anonymous in Biology

Why this year have i got lots more acorns in my garden. The tree is not even mine!

2007-08-19 07:35:04 · 3 answers · asked by Anonymous in Botany

Hi guys,

I am an inventor. I would like to know the know-hows of how to invent stuffs in successful way.

I always have some ideas, but they are not that greatly realistic.

Can you give me any advices, stories of the successful inventors, know-hows, etc?

I would really appreciate it!

2007-08-19 07:34:55 · 5 answers · asked by davegesprek 1 in Other - Science

If there were no mountains on Earth, would there be less humans, if any around today? I read up to 80% of humans depend on water.

Thanks

2007-08-19 07:32:44 · 2 answers · asked by Anonymous in Earth Sciences & Geology

my mother and father both saw an orb shape flying very fast over manchester recently, the orb was bright orange like the sun. it flew very fast then stopped then flew away very fast.
who do you report a sighting like this too?

2007-08-19 07:31:27 · 11 answers · asked by johnmyers001 1 in Astronomy & Space

2007-08-19 07:31:11 · 36 answers · asked by Superdude 5 in Paranormal Phenomena

2007-08-19 07:30:46 · 1 answers · asked by sanyam g 1 in Mathematics

2007-08-19 07:28:03 · 2 answers · asked by mohamoud i 1 in Chemistry

find how many positive integer solutions does the equation 2x+3Y=100 have.

2007-08-19 07:25:57 · 9 answers · asked by Anonymous in Mathematics