Science & Mathematics - 29 December 2007

trying to prepare for a test when I get back to school and I cant remember how to do this :(




Find the following, given the equation y = x2 + 4x - 21

a. Equation in general form,y = a(x – h)2 + k

b. Coordinate of the vertex

c. Y-intercept

d. X-intercept(s)

2007-12-29 03:57:14 · 5 answers · asked by Anonymous in Mathematics

I'm very near- sighted, so I either have to wear my glasses or contacts if I wish to share the views with my neighbors (without re- focussing the telescope).

The neighbors, while interested in seeing really cool things through the telescope, aren't very good at focussing for themselves.

With my eyes being the way they are, I can't focus FOR them...

Now, I've heard that the surgery is GREAT, but the treated area extends out to only 4 or 5 mm from the center of the eye(s).
A fully dark- adapted pupil is dilates to ~7 or 8 mm...
I've read in the past that this 'undertreatment' of the eye(s) will result in vignetting of images when the pupils are fully dilated.

Does anyone out there have experience with this?
Does anyone KNOW anyone who has experience with this?

I'd really like to have this proceedure done... The only thing that's stopped me in the past is what I've mentioned above...

Any help would be MOST appreciated!
Thanks in advance,
Bobby

2007-12-29 03:55:56 · 5 answers · asked by Bobby 6 in Astronomy & Space

Please give me detail.

2007-12-29 03:53:26 · 4 answers · asked by wedfg 2 in Zoology

possible to use the tools of that century to fabricate more advanced technology to launch a primitive sattelite into orbit with his knowledge of the future and human ingenuity and a whole lot of hard work?

2007-12-29 03:53:25 · 6 answers · asked by Anonymous in Physics

2007-12-29 03:47:22 · 7 answers · asked by kv 2 in Chemistry

Eric has a bag of candy. There are 6 grape pieces, 5 orange pieces and 3 lime pieces. Eric picks one piece of candy at random and eats it. Then he takes a second piece. What is the probability that both were grape?

15/91
7/50
7/9
3/20

2007-12-29 03:46:48 · 4 answers · asked by sunny p 1 in Mathematics

y=2(x-3)^2+4

Is it (-3,4) or 3,-4

?

2007-12-29 03:42:56 · 6 answers · asked by Anonymous in Mathematics

http://revver.com/video/589547/science-or-magic/

2007-12-29 03:39:13 · 4 answers · asked by hi 2 in Other - Science

Can anyone please list for me ALL KINDS of waves? and the frequency range for each kind?

Thank You!

2007-12-29 03:37:19 · 2 answers · asked by Anonymous in Earth Sciences & Geology

I'm SO interested in sharks and tigers and I always have been and I know its what I want I want to get involved with when im older, does anyone knoe any careers involving tigers or sharks?

2007-12-29 03:35:52 · 6 answers · asked by Anonymous in Zoology

Does it dissociate, ionize, decompose, etc. into its corresponding ions? Also what occurs when potassium dichromate is added to water to form an aqueous solution?

2007-12-29 03:35:32 · 4 answers · asked by bam4ever13 1 in Chemistry

The probability that the Racoon City High School baseball team will lose tonight is 7/10. What is the probability that they will win?

1/17
3/10
2/9
1/3

2007-12-29 03:31:20 · 5 answers · asked by sunny p 1 in Mathematics

i want to help animals around the world and adopt a snow leopard cub and raise it and find it a place in the wild but were can i go?

2007-12-29 03:30:54 · 4 answers · asked by Anonymous in Zoology

does it have a center ?

2007-12-29 03:29:40 · 7 answers · asked by Anonymous in Physics

this is a question on my biology exam paper and i cant find the anser anywhere

2007-12-29 03:28:27 · 4 answers · asked by abbiedoola 1 in Biology

What is the contrapositive of "if it is Sunday, then I do not go to school"?

1) If I do not go to school, then it is Sunday.
2) If it is not Sunday, then I do not go to school.
3) If I go to school, then it is not Sunday.
4) If it is not Sunday, then I go to school.

2007-12-29 03:28:25 · 4 answers · asked by Tommy 2 in Mathematics

if u answer by 1130 u will get the extra 10points. homework help

2007-12-29 03:26:21 · 5 answers · asked by sk8er 3 in Weather

Couldn't some of those comets have struck the moon when it was forming as well.? I mean if this did happen would there be water on the moon because comets are made up of mostly water right?

2007-12-29 03:25:50 · 5 answers · asked by Anonymous in Astronomy & Space

Lets say that it has been established that you have a 50/50 chance of each flip turning out to be either heads or tails. Should you consider the law of averages when predicting the result of the 10th try? Or would you say that no matter what the result of the previous 9 flips, it is still a 50/50 chance of heads or tails?

2007-12-29 03:25:47 · 12 answers · asked by lloyd.salimbao 1 in Mathematics

2007-12-29 03:24:54 · 9 answers · asked by Anonymous in Engineering

Given f(x) = 7 – 2x find f(-4).

2007-12-29 03:21:52 · 11 answers · asked by cutter1890 1 in Mathematics

We are all aware that like the sun, the moon rises in the east and sets in the west. I note that sometimes it takes the path of the winter sun (low across the southern sky) and sometimes high in the sky (like the summer sun). What are the dynamics of this and how long does it take for it to go from its southernmost path to its northernmost path?

2007-12-29 03:19:42 · 9 answers · asked by fg 2 in Astronomy & Space

if u answer within like 10min u will get the 10 points

2007-12-29 03:18:10 · 7 answers · asked by sk8er 3 in Physics

What is the integral of this function:f(x)=sin^4(x)cos^6(x)?

2007-12-29 03:12:09 · 3 answers · asked by nb 1 in Mathematics

List several ways to increase the amount of time that remains before the world runs out of oil.

2007-12-29 03:03:54 · 5 answers · asked by Anonymous in Earth Sciences & Geology

what is the reciprocal of 5 2/5?

2007-12-29 03:03:25 · 11 answers · asked by Anthony K 1 in Mathematics

If you follow space news, you sometimes hear where an object (space probe or maybe an asteroid) passes a planet. Sometimes it is said that the passing object speeds up and is flung out. Other times, it is slowed down by the encounter and may even end up captured by it. In laymans terms, when could an object be expected to speed up and when could it be expected to slow down?

2007-12-29 03:02:38 · 5 answers · asked by Dave C 3 in Physics

I am asking this out of curiousity ... I have my animals dewormed but wondering if horses, sheep, etc poop out worm eggs in the freezing winter do those eggs die or do they stay viable until spring?? I asked this in PETS and nobody really knew...

2007-12-29 03:01:58 · 6 answers · asked by CF_ 7 in Agriculture

2007-12-29 02:57:46 · 18 answers · asked by Anonymous in Mathematics

If conductivity and ph decrease or increase in BF water what will happened.

2007-12-29 02:57:07 · 2 answers · asked by nair s 1 in Chemistry