Science & Mathematics - 11 October 2006

2006-10-11 06:49:47 · 4 answers · asked by robertokami 1 in Engineering

Solve the simultaneous eqns below by showing me the steps clearly..very clearly so that i can understand it properly. Thanks a lot in advance.

y = 4x2 + 3ax - 2a2
y = 2x2 + 2ax - a2 ; where a is a real number.

Note that 4x2 is 4x squared
2a2 is 2a squared
2x2 is 2x squared
a2 is a squared

And by the way, the solution for this question says: (-a, -a2) (a/2 , a2/2). However, I dont knw how the the hell its been obtained. I guess that is why im posting the question here..!!

Thanks once again!

2006-10-11 06:49:13 · 6 answers · asked by mad_integer 3 in Mathematics

I am doing a report on this can you help me.Please answer seriously.Thank you!

2006-10-11 06:46:40 · 9 answers · asked by person 1 in Astronomy & Space

2006-10-11 06:45:01 · 9 answers · asked by Anonymous in Astronomy & Space

I need the answer by historical origin (if possible) to assist my 10 yr. daughter

2006-10-11 06:44:41 · 5 answers · asked by Soto 1 in Earth Sciences & Geology

olving the rolling of a die. Assume that the die is weighted so that the probability of a 1 is 0.3, the probability of a 2 is 0.1, the probability of a 3 is 0.2, the probability of a 4 is 0.2, the probability of a 5 is 0.1, and the probability of a 6 is 0.1. You roll the die until the sum of all numbers which have appeared exceeds 3. A random variable X is defined to be the number of rolls.

How many different values are possible for the random variable X?

i got 4

PART 2:

Fill in the table below to complete the probability density function. Be certain to list the values of X in ascending order.

Value of XProbability
1
2
3
4

2006-10-11 06:43:53 · 4 answers · asked by Diggler AKA The Cab Driver 1 in Mathematics

How do you use the method of reduction of order to find the general solution with the given function?

xy" - 2(x+1)y' + (x+2)y = 0, Y1=e^(x)

2006-10-11 06:43:12 · 1 answers · asked by Anonymous in Mathematics

It thundered down today at an alarming and sudden rate, flooding many places and destroying property with lightning. It used to just drizzle, but it looks like the weather is biting back with a vengeance

2006-10-11 06:43:07 · 12 answers · asked by Anonymous in Weather

involving the flipping of one of three coins. Assume that you have two fair coins and an unfair coin with Pr[H] = [ 2/5]. You randomly select one of these coins, and flip it twice. A random variable X is defined to be the number of heads you observe.

How many different values are possible for the random variable X?
i got 3

Fill in the table below to complete the probability density function. Be certain to list the values of X in ascending order.

Value of XProbability
0
1
2

how do u get probability
Fill in the table below to complete the probability density function. Be certain to list the values of X in ascending order.

2006-10-11 06:42:26 · 2 answers · asked by Diggler AKA The Cab Driver 1 in Mathematics

The earth rotates around the axis and the moves in a verticle axis around the earth, then all the planets in the 'near solar system' revolve around the sun, all on 'what would be called verticle, in relation to the 23 degree tilt of earth.

2006-10-11 06:42:10 · 9 answers · asked by get_her 1 in Astronomy & Space

2006-10-11 06:41:48 · 2 answers · asked by KQ 2 in Physics

this one is like the last one...
This time it is supposed to be more
difficult?
To find the terms
Q(x) + R(x)/2x+5
where Q(x) is the quotient
and R(x) is the remainder

2006-10-11 06:40:31 · 6 answers · asked by Anonymous in Mathematics

does anyone believe that god is giving a warning that the world is about to end by all the thunder storms and the tornadoes. because i don't really believe in god but things are starting to get weird.

2006-10-11 06:39:53 · 10 answers · asked by crazy4harryp 2 in Other - Science

2006-10-11 06:39:38 · 3 answers · asked by Anonymous in Physics

2006-10-11 06:39:33 · 5 answers · asked by Metallica 1 in Biology

2006-10-11 06:36:53 · 29 answers · asked by Anonymous in Chemistry

2006-10-11 06:36:21 · 13 answers · asked by serys 1 in Mathematics

(4x^4+13x^3+6x^2+11x+19) divided by (4x+5)?

2006-10-11 06:33:57 · 3 answers · asked by Anonymous in Mathematics

need for classics homework

2006-10-11 06:33:22 · 9 answers · asked by beckyboo 2 in Mathematics

Why would we use this terminology when there is still a question of whether this person ever existed?
Why would we base the entire earth timeline on one person?

2006-10-11 06:31:54 · 18 answers · asked by creskin 4 in Earth Sciences & Geology

I Know that they have different muscles in their face, but during evolution was it favorable or something, and are their any advantages or dissadvantages to it?
Jokes to question are also welcome

2006-10-11 06:30:25 · 7 answers · asked by good answers bad questions 2 in Biology

An element 'X' has atomic number11 and atomic mass 23. give the number of electrons and neutrons in it 23X11.

2006-10-11 06:29:20 · 3 answers · asked by Joelle 2 in Chemistry

There doesnt seem to be any reliable documentation of what occured during this time period.

2006-10-11 06:29:01 · 12 answers · asked by creskin 4 in Earth Sciences & Geology

We hear about dinosaurs in recent years, mainly due to the popularity of the movie Jurrasic Park, but it seems all that we know is based on studying the bones of dinosaurs.

Is there evdience that human beings were alive back then?

2006-10-11 06:24:42 · 5 answers · asked by creskin 4 in Earth Sciences & Geology

I need to know the andwer in the form of
Q(x) + R(x)/4x+5

I have tried, but my pencil is wearing down..
confused about the answer form
Help me solve?

2006-10-11 06:24:08 · 6 answers · asked by Anonymous in Mathematics

2006-10-11 06:20:33 · 4 answers · asked by abdirashid A 1 in Earth Sciences & Geology

its 12:15 pm now. i have to be at work at 10:00 pm. i know a persons body burns away one drink of alcohol every hour, that being a 12 ounce beer, 5 ounces of wine or 1 shot of whiskey. i have drank 4 shots in the last 15 minutes. if i drink for 2 more hours how many more shots can i consume and still be completally sober when i get to work?

2006-10-11 06:20:25 · 7 answers · asked by Anonymous in Mathematics

plz give da ans 2 da point

2006-10-11 06:19:28 · 9 answers · asked by sal 2 in Physics

2006-10-11 06:17:13 · 9 answers · asked by deek009 2 in Engineering

I want to know if the folowing information was unkonw to you and if so now you can you make the difference? does it change the way you see and understnd transgendred people?

see shemale : http://en.wikipedia.org/wiki/Shemale
see transsexual: http://en.wikipedia.org/wiki/Transwoman
see intersex: http://en.wikipedia.org/wiki/Intersex
transvestite : http://en.wikipedia.org/wiki/Transvestite

2006-10-11 06:15:17 · 5 answers · asked by Tacha 2 in Biology