Science & Mathematics - 10 December 2007

Find the percent of increase or decrease. Round to the nearest percent.
1. Original: 10
New: 12

2. Original: 50
New: 56

3. Original: 30
New: 12

2007-12-10 03:08:32 · 3 answers · asked by Anonymous in Mathematics

i am finding it hard to prove statements using contradiction, direct argument and counter examples. is there a way i can learn them easily without doing my head in (Alevel maths by the way)

2007-12-10 03:03:59 · 4 answers · asked by ps man 1 in Mathematics

If somebody overdosed on SSRI’s (Selective serotonin reuptake inhibitors), what would happen to them? Would they feel extremely happy and then die? Would they just get really high and then sick? What would happen to them?

2007-12-10 02:59:56 · 2 answers · asked by Anonymous in Medicine

As I understand current thinking, in quantum mechanics a force occurs through particle exchange so gravity should exhibit particle exchange. But in relativity gravity is explained as motion along the curvature of spacetime. Can't the dilemma be resolved by saying gravity is not a true force but just appears to be one (action at a distance) through an artifact of space curvature?

2007-12-10 02:59:18 · 8 answers · asked by Matthew B 1 in Astronomy & Space

What is the slope of this line? 7x+y=6

2007-12-10 02:59:07 · 7 answers · asked by ivan m 2 in Mathematics

3(x-2)=5(x+1) Can you please send this one a.s.a.p? thanks for your help!!!

2007-12-10 02:57:41 · 6 answers · asked by bug 2 in Mathematics

2007-12-10 02:57:25 · 7 answers · asked by wanderer..... 2 in Physics

2007-12-10 02:50:04 · 16 answers · asked by Eric 2 in Mathematics

√50x^2

a. 5√2x
b. 5x√2
c. 50x
d. 2x^2√5

2007-12-10 02:49:41 · 2 answers · asked by . 1 in Mathematics

your answer choices are
1. x=3 y=1
2. x=-2 y=0
3. lines are parallel
4. lines coincide

please show work

2007-12-10 02:49:38 · 10 answers · asked by Deannapril H 1 in Mathematics

7x-3y+21=0

2007-12-10 02:44:53 · 4 answers · asked by shakelia 1 in Mathematics

Which statement is true about an electron microscope?

a)The specimen must be dead
b)It magnifies to 2000x
c)It uses glass lenses
d)It is illuminated by light

2007-12-10 02:44:50 · 3 answers · asked by Anonymous in Chemistry

2007-12-10 02:42:39 · 5 answers · asked by Anonymous in Biology

solve each exponential equation. Express irrational solutions in exact form and as a decimal round to 3 decimal places:
1.0.3^(1+x)=1.7^((2x)-1)
2.3^(2x) +(3^x)-2 =0
3.(9^x) -3^(x+1) +1=0
4.2*49^x +11*7^x +5 =0

2007-12-10 02:41:53 · 4 answers · asked by Anonymous in Mathematics

2007-12-10 02:40:29 · 6 answers · asked by Bill W 【ツ】 6 in Zoology

1km2 = 1 * 10^6 m2

How come 1km2 = 1 * 10^10 cm2 ?

It doesn't make sense to me as I thought the metric unit changes were like this
1km = 1*10^3m = 1*10^6cm
1km2 = 1*10^(3+3)m2 = 1*10^(6+3)
and so on..

2007-12-10 02:39:46 · 3 answers · asked by BlabberBlab 1 in Mathematics

2007-12-10 02:39:44 · 4 answers · asked by Anonymous in Mathematics

2007-12-10 02:37:01 · 7 answers · asked by Anonymous in Mathematics

2007-12-10 02:35:12 · 3 answers · asked by Charlotte G 1 in Biology

2007-12-10 02:34:34 · 3 answers · asked by nookie 1 in Mathematics

Find the critical points of f(x) = x - 3ln(x)

2007-12-10 02:30:57 · 4 answers · asked by Rachel 1 in Mathematics

2007-12-10 02:30:29 · 7 answers · asked by ashwin m 1 in Physics

For all the research done on plants and alternative energy sources you would think someone design a "giant plant" that would gather sun and turn it into energy the same way a plant does IE not using toxic substances like solar panels. Has there ever been such an effort...or do you have any ideas for one?

2007-12-10 02:29:35 · 3 answers · asked by M S 5 in Botany

In my school, we are researching outer space && are supposed to come up with a question, to find online and research. I would like some nice detail for this question, to take notes on, and maybe put most of it in my own words for my project! Please give atleast two sentences. Thanks!

2007-12-10 02:23:43 · 11 answers · asked by Anonymous in Astronomy & Space

2007-12-10 02:22:40 · 6 answers · asked by abdul k 1 in Engineering

what we have to do to live on mars,, this is for school so no bs answers please

2007-12-10 02:20:49 · 4 answers · asked by slayter19 2 in Astronomy & Space

I understand a foot pound is the kenetic energy required to lift one pound one foot. A .30-06 has a rating of 2,829 foot-pounds of energy at the muzzle. I can't believe the .30-06 cartridge could lift a ton and a half one foot off the ground. So, what do these ratings really mean? How do the manufactures compute there findings?

2007-12-10 02:20:44 · 4 answers · asked by jack-copeland@sbcglobal.net 4 in Physics

2007-12-10 02:20:40 · 2 answers · asked by Becky 1 in Chemistry

What I 'm getting at is: Has it ever been constructed and by which countries?

2007-12-10 02:17:59 · 8 answers · asked by The Loiterer 3 in Physics

2007-12-10 02:17:34 · 3 answers · asked by Vince 1 in Mathematics