Science & Mathematics - 5 September 2007

a. (-2) + (-7) = +3
b. (+5) + (-7) = -2
c. (+5) + (-7) = +12
d. (+5) + (+7) = -2

2007-09-05 05:03:18 · 8 answers · asked by phillylady4u 2 in Mathematics

1. 27x³ - 8
2. 9x² +30x + 25
3. 4x² -23x +15
4. 9x² - 66x + 121
5. 6x² + 9x

2007-09-05 04:55:26 · 4 answers · asked by shiela_closer 1 in Mathematics

Firstly can anyone explain to me what the fetch is?!
And secondly, what happens to the wavelength after the fetch reaches a certain point. For instance if you have a graph plotting wavelength against fetch and you have a curve, after you reach the top of that curve what happens to it? Does it go down or become saturated etc..?
Thank you so much in advance, it's my first day of gcse lessons and i am very confused! :S
xxx

2007-09-05 04:54:39 · 1 answers · asked by Rolo 2 in Geography

NOTE: I am not asking for the answer, I would like to try to figure out the answer myself, because I want to understand what I have to do. If you give me the answer, though, please tell me how you got that answer so I can learn it ..thanks!

1. 4,7,3,4,...
In the sequence above, the first term is 4, the second term is 7, and each term after the second term is the nonnegative difference between the previous two terms. If the nth term is the first term of the sequence that is equal to zero, what is the value of n ?

2. If the average (arithmetic mean) of q, r, s, and t is 10, what is the average of s-r, 3r+t, 10-r and 6+q ?


3. If x^10= 5555 and x^9/y= 5, what is the value of xy?


math class is soooo hardd..
thanks for the help

2007-09-05 04:52:46 · 5 answers · asked by alicia 2 in Mathematics

Cosmologists who have promoted the Hubble redshift relation and the 2.7K Cosmic Blackbody Radiation as virtual proof of the big bang have led the rest of the scientific community to consider it one of the outstanding scientific triumphs of all time. Witness, for example, the recent claim that the big bang is bang on because CBR measurements at z = 2.34 bracket big bang's prediction of T = 9.1K. Despite this, some of history's greatest surprises have occurred when apparently well-established scientific theories were overturned after long-overlooked critical testing revealed flaws in their cornerstone postulates. In this instance the scientific community at large has been unaware of cosmologists' failure to verify big bang's cornerstone postulates. This lapse may yet become known as one of the greatest faux pas in the history of science because this series of papers reveals that big bang's cornerstone postulates have always been seriously flawed.

2007-09-05 04:47:53 · 11 answers · asked by Anonymous in Astronomy & Space

2007-09-05 04:47:16 · 5 answers · asked by pinkparadiseforever 2 in Mathematics

http://bestdocumentaries.blogspot.com/2007/06/boy-who-lived-before.html

2007-09-05 04:45:19 · 8 answers · asked by Anonymous in Other - Alternative

by monozygotic twins i mean the identical twins that are formed by the division of the one zygote.

2007-09-05 04:42:07 · 3 answers · asked by sheri 2 in Botany

And no there is not a wrong answer since no really know what happens. I think it brings you to an alternate universe or is like a shortcut to the other side of the universe.

2007-09-05 04:40:48 · 18 answers · asked by Anonymous in Astronomy & Space

2007-09-05 04:40:27 · 13 answers · asked by Bill W 【ツ】 6 in Astronomy & Space

3 less than twice a number is -4. Find the number. Any help with this problem will be GREATLY appreciated! I'm about to go crazy! I know it's right in front of my face but I'm too frustrated now...this sucks! lol

2007-09-05 04:39:10 · 13 answers · asked by countess_von_katz 2 in Mathematics

Also, what is the amount of time it takes for the acceleration?

2007-09-05 04:36:49 · 2 answers · asked by Anonymous in Physics

I live in Northeast Ohio and we can find brachiopods around some of the local creeks.

2007-09-05 04:34:23 · 6 answers · asked by ? 3 in Earth Sciences & Geology

2007-09-05 04:30:07 · 20 answers · asked by arnawaz b 1 in Mathematics

I saw this question somewhere and I couldn't make up my mind what the answer is :P

2007-09-05 04:29:25 · 4 answers · asked by Anonymous in Earth Sciences & Geology

2007-09-05 04:27:29 · 4 answers · asked by Lala 1 in Geography

Falls resulting in hip fractures are a major cause of injury and even death to the elderly. Typically, the hip's speed at impact is about 2.0 m/s. I this can be reduced to 1.3 m/s or less, the hip will not fracture. One way to do the is by wearing elastic hip pads. (a) if a typical pad is 5.0 cm thick and compresses by 2.0 cm during the impact of a fall, what acceleration in m/s^2 and g's) does the hip undergo to reduce its speed to 1.3 m/s? (B) The acceleration you found in part (a) may seem like a rather large acceleration, but to fully assess its effects on the hip, calculate how long it lasts.

Please help me. I have been trying to work on this and just can't figure it out.

2007-09-05 04:24:56 · 3 answers · asked by Anonymous in Physics

It returns in 7 hours upstream the river.

The speed of river stream is 2mph.
The speed of the wind is 4mph.
What is the angle between the wind and the river?

2007-09-05 04:22:37 · 3 answers · asked by Alexander 6 in Physics

2007-09-05 04:20:14 · 8 answers · asked by cityboy2587 1 in Parapsychology

Vesatile individual. Limited from lifting and or standing for long periodsot time due to recent back injury. 30 years experience assembling and repairing all kinds of things. Can do almost anything! Need Job Now!

2007-09-05 04:19:45 · 2 answers · asked by Anonymous in Engineering

How many yrs will it take 1000 dollars invested at 7% interest to earn 280 dollars?

what formula will i use for this?

2007-09-05 04:19:28 · 4 answers · asked by Anonymous in Mathematics

solving equations in one variable - symbolically and graphically.

please tell me all you know about this subject. possibly with examples. can you please make it understandable to a 9th grader. thanks. :]

2007-09-05 04:11:11 · 4 answers · asked by Anonymous in Mathematics

2007-09-05 04:07:26 · 2 answers · asked by Advocate 2 in Zoology

Is there anything out there or is all the mass collected into galaxies in all that we know about the universe?

2007-09-05 04:06:47 · 11 answers · asked by Balrog 2 in Astronomy & Space

explain why an animal species with a varied diet may have an advantage over a species with a more specialized diet

2007-09-05 04:06:24 · 4 answers · asked by wisdi 1 in Biology

2007-09-05 04:05:09 · 4 answers · asked by Anonymous in Chemistry

2007-09-05 04:05:02 · 9 answers · asked by dan 1 in Mathematics

f(x) = 3x² - x - 4

2007-09-05 04:04:20 · 2 answers · asked by Michael S 1 in Mathematics

I watched a tv program last night on super massive black holes and i am fascinated in stuff like that, but you'll have to forgive my lamens terms when im asking the question here. Okay so they know that the black hole is there at the center of the andromeda galaxy because of how fast stars are moving around the center and that made sense, but what i am wondering is if we can't actually see the black hole then how do we know that its there? The show did this illustration where it shows how black holes literally bend space time to the breaking point and no one is sure what is going on inside the black hole or the singularity? I guess basically what im asking is why does it have to be a black hole and not just a super massive central sun? I mean if all we can see is bright light around the center why the black hole? does that make sense? Also on this program they said that we believe there is an upwards of 120 billion galaxies in the universe? thats unbelievable!

2007-09-05 04:03:25 · 14 answers · asked by Balrog 2 in Astronomy & Space

i clean my dogs cage with bleach is this bad doesnt that make mustard gas or not i use it diluted like 1/4 of a cup to 1 gallon of water but today the bleach a little spilled

2007-09-05 04:01:09 · 2 answers · asked by Anonymous in Chemistry