Science & Mathematics - 18 October 2007

* is a nevgative i guess.it;'s called a star

3x+15= 2*

x= *+24

*+2*+8=x

3x+x-2x+8= 3x+x

2(2x+4)-2x= x+18

2(5+3)+3(times)-5

3(2*)-3*+4= 2*+5

3x+2*+x= x+6

2(x+4)+*= 16

yes this is my homewokr and yes i am llookin for anwsrs but i dont feel good and i need tod o thsi so please help

2007-10-18 14:43:52 · 1 answers · asked by I AM IN LOVE♥ 2 in Mathematics

my sister, the nurse, uses lynesta. claims it has less after effects the next day. have you had experience with these drugs and insomnia etc.. thanks in advance. please be technical. i already have read the "facts" on the web. that never includes real life, personal experience.

2007-10-18 14:43:48 · 19 answers · asked by JIM 4 in Medicine

2007-10-18 14:40:59 · 1 answers · asked by Anonymous in Mathematics

2007-10-18 14:40:15 · 5 answers · asked by xxixi 2 in Mathematics

2007-10-18 14:40:05 · 2 answers · asked by Anonymous in Biology

..is it the double helix

2007-10-18 14:37:08 · 3 answers · asked by zooonami69 2 in Biology

to the ground is ??????

2007-10-18 14:36:16 · 1 answers · asked by Anonymous in Physics

Any uses for calorimetry in everyday life? Please help!!!

2007-10-18 14:28:38 · 4 answers · asked by Anonymous in Chemistry

When finding mean, median and mode, there always is a mode, even if the two most common numbers have the same number. Why?

2007-10-18 14:26:49 · 13 answers · asked by Mets Fan 1 in Mathematics

um, okay, well uh.... can boogers be digested? lol. i know it's gross but seriously, like when little kids eat their snot does it get digested? erm, what exactly is a booger anyway? i mean, what's it made of and how are they formed? is there anyway to stop them from forming. lol. ^_^

2007-10-18 14:22:27 · 6 answers · asked by Anonymous in Biology

this is a crossword puzzle

2007-10-18 14:21:17 · 1 answers · asked by Anonymous in Chemistry

I've been working on this problem, and I can't seem to get it. Please, can someone help me out...

Two particles, of masses m and 4m , are moving toward each other along the x-axis with the same initial speeds of 6.53 m/s. Mass m is traveling to the left, and mass 4m is traveling to the right. They undergo a head-on elastic collision, and each rebounds along the same line as it approached.

I need to find the final speed of the heavier particle.
Any help would be very much appreciated, Thanks in advance.

2007-10-18 14:20:32 · 2 answers · asked by Anonymous in Physics

2007-10-18 14:20:28 · 3 answers · asked by hotstone 1 in Zoology

the distance is approx. 235 miles. He calls home at 1:45p.m to remind his wife to turn on the pool and fix dinner. What is the speed of the train?

2007-10-18 14:17:55 · 2 answers · asked by sweety 1 in Other - Science

2007-10-18 14:17:22 · 2 answers · asked by Terri L 2 in Biology

2007-10-18 14:16:13 · 7 answers · asked by Anonymous in Mathematics

i need to know about the plate arrangement in the ludlow epoch aproximately 400 - 450 million years ago.
anything would be greatly appreciated!!

2007-10-18 14:16:09 · 1 answers · asked by Anonymous in Earth Sciences & Geology

2007-10-18 14:15:31 · 11 answers · asked by Deenie 6 in Paranormal Phenomena

I am only 11 so please don't write any complicated words, (i know parallax though). I NEED TO KNOW WHY the sun is in different places when it sets, throughout the year. This is for a project.

2007-10-18 14:12:24 · 5 answers · asked by robert_pattinson<3 1 in Astronomy & Space

its really 1.67x10 to the negitive 27 and 5.98x10 24 power. thanks

2007-10-18 14:10:38 · 1 answers · asked by rcg987 1 in Mathematics

A spring with a force constant of 3.1 104 N/m is initially at its equilibrium length.
(a) How much work must you do to stretch the spring 0.053 m?

(b) How much work must you do to compress it 0.053 m?

2007-10-18 14:09:47 · 2 answers · asked by Anonymous in Physics

Will Orion for example look different one day because the stars have moved or will they stay exactly where they are?

2007-10-18 14:06:13 · 7 answers · asked by zonda 2 in Astronomy & Space

How do we really know for sure? We look in space for other planets but do we know for sure??

2007-10-18 14:02:21 · 7 answers · asked by Anonymous in Astronomy & Space

2007-10-18 14:01:34 · 8 answers · asked by Tracy 1 in Astronomy & Space

I am a number who is greater than 40 and less than 90. I am proud to be a
prime number. My ones digit is also a prime number and so is my tens
digit. If you subtract my ones digit from my tens digit, the answer is not
2. What number am I?

2007-10-18 13:59:54 · 6 answers · asked by Anonymous in Mathematics

2007-10-18 13:58:55 · 1 answers · asked by Anonymous in Medicine

The world was once a big land mass but it seperated into different continents.As the plates are still moving will we become one continent again?

2007-10-18 13:58:02 · 12 answers · asked by Anonymous in Geography

When virgin soils are ploughed CO2 which is has been fixed for thousands of years is released into the atmosphere.

If the total amount of Carbon stored in soil is a much greater than all that of stored in living plants, why plough?

2007-10-18 13:55:09 · 10 answers · asked by Anonymous in Agriculture

2007-10-18 13:53:36 · 3 answers · asked by Anonymous in Biology

David and his family are preparing to have a crawfish boil on the shores of Lake Livingston. David's dad needs water for the pot . He hands David two jugs and says "The big jug holds 5 gallons and the small jug holds 3, go down to the lake and bring me exactly 4 gallons back all in the five gallon jug" Describe how this is possible.

#2
A car tire has an area of 200.96 square inches (this is the sectional area, meaning the area of the circle.) How far does the car travel after the tire makes seven complete rotations?

2007-10-18 13:52:56 · 3 answers · asked by Anti Form Alex 1 in Mathematics