Science & Mathematics - 5 August 2007

2007-08-05 16:55:29 · 1 answers · asked by ilovestitch 1 in Biology

im going into 10 th grade next year so i have to take geometry im just debating whether i should change to challenge geometry....
see i need to have have more challenge classes i just dont know which challenge classes to take.
last year i took algebra and i was awful at it i was lucky to pass with a c+ at the end of the year..... but people say geometry is much easier than algebra so im not sure if i should change classes or not


any advice would be much appreciated

2007-08-05 16:54:38 · 7 answers · asked by amanda marie 3 in Mathematics

How often do you get sued ?

2007-08-05 16:51:56 · 3 answers · asked by Shiro 2 in Medicine

2007-08-05 16:48:47 · 1 answers · asked by SILVIA C 1 in Chemistry

because i have to have a blood test done once for four months...

2007-08-05 16:48:28 · 10 answers · asked by Cecilia G 1 in Medicine

Is it the moron? If so, do they come in waves?

2007-08-05 16:47:51 · 5 answers · asked by The Instigator 5 in Physics

Any recommendations? I'm starting my first senior design project and I'm not quite satisfied with the project that was recommended to me (RSA Cipher on an FPGA board). I'm really just looking for some interesting and doable ideas. Thanks!!

2007-08-05 16:47:12 · 2 answers · asked by Galbadian 2 in Engineering

Is y=[(x^2)-2x-3]/x-3 a function? Please give its domain, range, axis of symmetry, and shape of graph, if it is so.

thank you

2007-08-05 16:40:03 · 4 answers · asked by rock-onz 1 in Mathematics

Fst = (Ht-Hs)/Ht
Where Ht is the expected heterozygosity of the total population
andHs is the average expected heterozygosity from within each population

If there are two populations
Then
pop 1 :p=0.76,q=0.24
pop 2 :p=0.80,q=0.20
therefore
2pq=2 x 0.76 x 0.24 = 0.3648 in pop 1
and
2pq=2 x 0.80 x 0.20 = 0.32 in pop 2
This means that
Hs = (0.3648+ 0.32)/2= 0.3424

To calculate Ht
average p = (0.76+0.80)/2 =0.78
average q =(0.24+0.20)/2=0.22
therefore
Ht=2 x 0.78 x 0.22 = 0.3432

From these two values we can say

Fst=(Ht-Hs)/Ht = (0.3432-0.324)/0.3432=0.002331

BUT WHAT if there are four populations
Please help to explain

2007-08-05 16:39:21 · 1 answers · asked by Anonymous in Biology

Please find the general equations of the perpendicular lines, one with slope of -3, both passing through the center of circle with radius 4.

Thank you

2007-08-05 16:36:47 · 3 answers · asked by rock-onz 1 in Mathematics

The electricity costs of a business decreased from $12,000 one year to $10,920 the next. What is the rate fo decreased?

2007-08-05 16:35:09 · 4 answers · asked by moni 1 in Mathematics

This is a fact and I would like to know why hot water is heavier.

2007-08-05 16:34:15 · 5 answers · asked by Agent Fox 6 in Physics

ok.. it says i need to put it into the ax^2+bx+c=o form ..

the problem is .. 49x^2=64

so i wrote ... 49x^2-64=o

now what do i do, bc only 7 goes into 49 evenly, and 8 into 64..but not both ??

2007-08-05 16:33:29 · 6 answers · asked by CHICKENBUTT 1 in Mathematics

Hi. What are the chances of becoming legally blind? Taking into consideration that I have astigmatism and my family has no history of blindness?

2007-08-05 16:29:12 · 2 answers · asked by JC 2 in Medicine

If two circles are externally tangent, how many common tangents do they have?

2007-08-05 16:29:11 · 3 answers · asked by ½ÃÂù ± 2 in Mathematics

I really need one. People in my high school suggested the Ti-89 but its like 200 bucks...lol any ideas?

2007-08-05 16:28:55 · 8 answers · asked by tennisman2156 2 in Mathematics

2007-08-05 16:26:40 · 8 answers · asked by michael 1 in Astronomy & Space

I heard a theory not too long ago that humans are slowly losing their pinky finger. I'm just curious to know if anyone has heard anything scientific on this subject; links would be appreciated.

2007-08-05 16:21:56 · 10 answers · asked by Justin H 7 in Biology

2007-08-05 16:19:04 · 3 answers · asked by patrick lawrence g 1 in Medicine

2007-08-05 16:17:55 · 5 answers · asked by Anonymous in Mathematics

Even using the formula I can't even get the right anwser this is none sense.
-b+/-√b²-4ac /2a

Prob.
-x²-8x+3=0

Solving.
x²+8x-3=0
-8+/-√64-4*1*-3/2

x=-8+/-√76/2

The anwser is totally wrong, how useless the formula is...

Complete the square.

(x+8/2)²-64/4=-3 +64/4
(x+8/2)²=52/4
(x+8/2)=2+/-√13/2
X=-8+/-√13/2

2007-08-05 16:15:52 · 4 answers · asked by Anonymous in Mathematics

1/2 div 3 1/4

2007-08-05 16:13:41 · 3 answers · asked by Jamie 1 in Mathematics

2007-08-05 16:13:02 · 3 answers · asked by pdum 1 in Botany

2007-08-05 16:12:31 · 5 answers · asked by Anonymous in Mathematics

what do
!
∑
┴
and
(a,b)
mean? sorry its just back to school and hard to remember

2007-08-05 16:11:16 · 7 answers · asked by Tasha 3 in Mathematics

1) A 12 V automobile battery is connected to an electric starter motor. The current through the motor is 216 A. How much energy does the battery deliver to the motor each seconds? Answer in units of J.
I got 11.988 but Im not sure if I am correct.

2) If 5.4 x 10^21 electrons pass through a 10 resistor in 8 minutes, what is the potential difference across the, what is the potential difference across the resistor? Answer in units of V.

2007-08-05 16:11:12 · 2 answers · asked by jay b 1 in Physics

2007-08-05 16:09:14 · 4 answers · asked by JALISCO 2 in Physics

2007-08-05 16:08:55 · 3 answers · asked by Kris 1 in Botany

2007-08-05 16:04:15 · 14 answers · asked by delivery.646 1 in Geography

2007-08-05 16:03:51 · 4 answers · asked by My W 1 in Biology