Science & Mathematics - 20 July 2007

2007-07-20 11:45:24 · 11 answers · asked by BrilliantPomegranate 4 in Weather

2007-07-20 11:39:54 · 14 answers · asked by Anonymous in Astronomy & Space

1. 2x - 3y = 12
4x + 6y = 24
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Solve this sytem of equations using any method and give the value of the Y value only! y = _____

2. Coincident lines have an infinite number of points in common because they are the exact same line.

true or false?

3. Which of these equations are parallel lines?

x + 4y = 12
2x + 4y = 8

4x - 3y = 12
-3x + 4y = -24

3x + 4y = 12
-3x - 4y = -24

-4x + 2y = 8
¼x + ½y = 4

4. 2x + y = 8
x - y = 13

Solve this system of equations using the addition method

(2,4)

(16,3)

(7,-6)

(7,1)

2007-07-20 11:31:12 · 2 answers · asked by Sunshine 1 in Mathematics

2007-07-20 11:29:29 · 4 answers · asked by TTHOM 2 in Geography

http://i181.photobucket.com/albums/x85/ctti_3/untitled-31.jpg

2007-07-20 11:28:31 · 6 answers · asked by biomes 1 in Mathematics

Oksy, this little guy was black, 3 sections, with a thick yellow stripe. He was a mean little thing too. About the size of a quarter when he stretched his legs out. I have a picture of him, but it's real fuzzy because my camera isn't all that great with close-ups.

2007-07-20 11:25:45 · 4 answers · asked by Anonymous in Zoology

Find the least common multiple (LCM) for each of the following groups of number. Use which ever method you wish. 12, 20, and35

2007-07-20 11:21:15 · 10 answers · asked by turlington999 1 in Mathematics

For x ≥ 1, the surface area of revolution of y = 1/x is infinite, yet the volume is finite. How is it possible that it cannot even contain the paint required to paint it?

2007-07-20 11:20:38 · 5 answers · asked by Scythian1950 7 in Mathematics

Can a NATURAL HEAT SINK Remove Heat no matter how much heat?
Is it possible that no matter how much heat energy you have to deal with, it can still be dissipated or removed as long as there is an adequate 'heat sink'. Even if it takes the rest of the universe to do it. Can a 'natural heat sink' remove heat from Earth and send the heat out of the atmosphere.
In other words, if theres even more heat, just keep getting a "bigger" 'heat sink'?
In other words , dealing with the universe is there an infinite supply of material , ice or whatever, do deal with any heat transfer.

2007-07-20 11:11:38 · 3 answers · asked by MichelleMcD81 2 in Physics

nuts and bollts stick and strip threads, what causes it and how can i avoid it. Iv tried general greese and copper slip??.

2007-07-20 11:09:53 · 9 answers · asked by mike_chesh 1 in Engineering

My word problem deals with the population explosion of cats.
Here it is:
If a mother cat has 4 kittens every 6 months and two are male and 2 are female, how many cats will there be in two years ?
The rules:
All months are 30 days long.
Pregnancy lasts 60 days.
All female cats become pregnant when they are six months old.
All animals live.
Bonus:
How many litters does each generation have?

2007-07-20 11:08:41 · 4 answers · asked by anonymous 1 in Mathematics

2007-07-20 11:08:14 · 4 answers · asked by Mohammed Whelly 1 in Astronomy & Space

Looking at a trapezoid like this:
http://content.answers.com/main/content/wp/en/b/b7/Isosceles_trapezoid.jpg

top - 10 ft
bottom - 16 ft
left side - 5 ft
right side - 5 ft

The question:

What is the distance between the top and bottom?
A. 3
B. 4
C. 5
D. 10
E. 16

Please explain your answer.

2007-07-20 11:07:03 · 8 answers · asked by sameperson247 2 in Mathematics

if measure AC is 12, i need to find out measure AB and CB.

how do i do that with knowing angle A is 90 degrees and B is 60 and C is 30???

2007-07-20 11:05:26 · 6 answers · asked by Anonymous in Mathematics

…to explore the universe, or nothing can endure traveling at the speed of light?

2007-07-20 11:04:42 · 14 answers · asked by Mutual Help 4 in Astronomy & Space

Hi, i'm a freshman and im going into Algebra 2 next year. I was wondering if there are any sites or any info you can post on what to expect and stuff to prepare. Thanks

2007-07-20 10:59:57 · 1 answers · asked by Anonymous in Mathematics

2007-07-20 10:58:13 · 4 answers · asked by kirsty1995 2 in Physics

What can happen to us if we can?

2007-07-20 10:56:38 · 16 answers · asked by Mutual Help 4 in Astronomy & Space

You can see earth, but not one star? How come?

2007-07-20 10:55:12 · 19 answers · asked by Anonymous in Astronomy & Space

1. Which of the following statements about parallel lines is NOT correct?

Parallel lines have the same slope

Parallel lines do not intersect ever.

Parallel lines have one point in common and thus have only one solution.

Parallel lines are an equal distance apart at all times.

2. Which of the following equations represent perpendicular lines?

y = ½x + 3
y = -2x - 2

y = 2x + ¼
y = 2x - 4

y = 2x + 4
y = ½x - 2

2x + 3y = 6
-½x + 4y = 8

3. 6x - 2y = 24
The slope of this line is _____?

4. 6x - 2y = -24
The y-intercept of this equation is ____?

5. y = -½x + 4
A line that is perpendicular to this line would have a slope equal to ____?

6. y = 4x - 2
A line that is parallel to this line would have a slope of ______?

7. Perpendicular lines have negative reciprocal slopes, so if one line has the slope of ¼, the other line will have the slope equal to -4
true or false?


8. Use the substitution method for this system of equations:

y = ½x + 4
2x + 4y = 8

(2,5)
(-2,3)
(0,2)
(4,0)

2007-07-20 10:51:08 · 3 answers · asked by Sunshine 1 in Mathematics

maybe im just a werido but i like cold weather maybe the new york aera doesnt have the worste winters but theres something i like about the cold i like those days where theres hardly any light bring on old man winter! i hate the heat!

2007-07-20 10:45:29 · 16 answers · asked by Anonymous in Weather

a pilot of the space shuttle of NASA

2007-07-20 10:44:17 · 6 answers · asked by lorenzoxpotter 1 in Astronomy & Space

in the last 5 years. It has literally rained every day since May. How can there BE so much rain?!
Especially considering most of Australia is suffering its worst drought in decades.
Is it Global Warming?

2007-07-20 10:41:49 · 17 answers · asked by Anonymous in Weather

like spaghetti thrown at a wall. is it a function of suction or more like inertia? or is this a question i should be asking in the chemistry section?

2007-07-20 10:40:12 · 4 answers · asked by Anonymous in Physics

The year starts on any one of the seven days and then it's either leap year or not. Leap year is what moves the rotation making it take longer for the days to come back around.

2007-07-20 10:39:11 · 5 answers · asked by ROLAND U 2 in Astronomy & Space

2007-07-20 10:33:44 · 15 answers · asked by Ryan O 1 in Astronomy & Space

Aliens are cool. If you search the sky you see stars, maybe even planets, there must be life on other planets, right? The government doesn't tell the public every little thing, right? People should know if there really are Aliens out there in space, right? God doesn't make those choices, we do, right? We should know. It's our country, right? I mean people should know if there are Aliens, if they have been on earth, right? We have the right to know! If you want to know, then ask. People should know!

2007-07-20 10:33:23 · 13 answers · asked by Anonymous in Astronomy & Space

2007-07-20 10:32:59 · 12 answers · asked by Anonymous in Zoology

It hurts like poop!

2007-07-20 10:28:45 · 5 answers · asked by j;eaojtoig;45jho;54ihu;45hujt54 6 in Medicine

If a hexagon is 12 feet in diameter, how many square feet are contained therein?

2007-07-20 10:27:20 · 4 answers · asked by N C 1 in Mathematics