Science & Mathematics - 2 September 2007

All i can think of is that if you make a plot of y = x and y = 1 - square root of (1-a) from x = 0 to x = 1 you will see that the graph of y = 1 - square root of (1-x) is always beneath the graph of y = x. However, the proof is to be done without using graphs. How is that possible then?

2007-09-02 12:46:21 · 8 answers · asked by Anonymous in Mathematics

S: There is a car that is blue and weighs less than 4000 lbs.

My first question is what do they mean by nontrivial?
The other thing that's confusing me is that the statement contains an "and". If it just said "There is a car that weighs less than 4000 lbs." the negation would be "All cars weigh more than 4000 lbs." but I'm confused about how to deny two things.

Thanks!

2007-09-02 12:46:21 · 2 answers · asked by lilygnome 2 in Mathematics

It seems weird that the moon is just the right size to block out the sun.. does the gravitational pull of the sun on the moon make it just the right distance so that it can block the sun exactly? i dunno if u get my question lol.

2007-09-02 12:46:15 · 7 answers · asked by Millionster 3 in Astronomy & Space

Find the square root of -59 to the nearest hundredth

2007-09-02 12:42:58 · 3 answers · asked by Tainteddeceptions 3 in Mathematics

A rhinoceros is at the origin of coordinates at t1=0. For the next 12 seonds, the rhino's average velocity has x component -3.6 m/s and y component 3.9 m/s. Assuming no acceleration, at time t2=12 seconds, what are the x and y coordinates of the rhino? How far is the rhino from the origin?

I did V = sq rt (-3.6^2 + 3.9^2) to get the resultant, then multiplied that by time to get displacement. Is that right?

And how can I find the coordinates? Thanks very much!!!!

2007-09-02 12:42:35 · 3 answers · asked by Anonymous in Physics

If you went back in the past to kill your grandfather, before he met your grandmother, had kids ect... would you suddenly disappear?
Would changing the past suddenly change the present/future?
I.E., The movie, Back to the future? What are your thoughts on this? let me know.

2007-09-02 12:39:45 · 7 answers · asked by swebber_77 1 in Physics

A 12 V source is connected across a 10 Ω resistor. How much energy is used in two minutes? The book states its .480 Wh, how is this figured and put into a formulae?

2007-09-02 12:38:45 · 4 answers · asked by Chris 2 in Engineering

We hear the term all the time or used to. Once in a Blue Moon.
Does anyone know what is a Blue Moon?

2007-09-02 12:37:47 · 9 answers · asked by Anonymous in Astronomy & Space

does anyone else have it besides me?? My left arm is affected by it.....if that makes sense.....I just learned what it is....I'm 14......I accept how I am, but I just wanted to know if anyone else has it.....

2007-09-02 12:36:56 · 6 answers · asked by I LOVE Shoez 1 in Medicine

2007-09-02 12:36:36 · 22 answers · asked by Anonymous in Astronomy & Space

Do you believe the process of natural selection or that God put us here. Explain your reasons.

2007-09-02 12:36:19 · 12 answers · asked by adam w 3 in Other - Science

Using your own words, describe the following terms:

* vanishing points
* horizon lines
* convergence lines

2007-09-02 12:33:30 · 8 answers · asked by Anonymous in Mathematics

i need help!!!we have an homework assignment that we have to to prove mathematically that the world is a sphere.by finding the cirumference and i already know the circumfrence but i dont no how to get it!!!!!!!HELP!!!!!!!!

2007-09-02 12:32:34 · 4 answers · asked by jasmyne b 1 in Mathematics

http://tinypic.com/view.php?pic=66osbk3

ahh, please help. I have the worst headache from these problems. I can't get them to make any sense.

Thanks!

2007-09-02 12:32:19 · 4 answers · asked by Randy M 1 in Mathematics

2007-09-02 12:24:33 · 7 answers · asked by Anonymous in Astronomy & Space

And why exactly can't they fly? Too bulky? They can flap/hover a few feet off the ground...

2007-09-02 12:14:28 · 7 answers · asked by Sarah 1 in Zoology

http://tinypic.com/view.php?pic=5yst27c

For the first 2 the directions are "Find the measure of each numbered angle".

For the last 4 the directions are "Chords, tangents, and secants are shown, find the value of x".

PLEASE show your work so I will understand it (I really want to learn how to do it, not just have you do my homework). Thanks a lot!!!

I posted this a million times and no one knows how to do it. eek.

2007-09-02 12:12:00 · 3 answers · asked by acetone33432 1 in Mathematics

2007-09-02 12:10:31 · 3 answers · asked by Anonymous in Astronomy & Space

the weight of an object follows this equation: , where C is a constant, and r is the distance that the object is from the center of the earth.

a. Solve the equation for r.

b. Suppose that an object is 100 pounds when it is at sea level. Find the value of C that makes the equation true. (Sea level is 3,963 miles from the center of the earth.)

c. Use the value of C you found in the previous question to determine how much the object would weigh in

i. Death Valley (282 feet below sea level)

ii. The top of Mt McKinley (20,430 feet above sea level)

2007-09-02 12:04:48 · 4 answers · asked by mathidiot 1 in Mathematics

thanks

2007-09-02 12:01:27 · 16 answers · asked by trixabelle29 4 in Mathematics

click the link
http://moon.google.com/
then zoom in really close for the moons secret

2007-09-02 11:56:45 · 11 answers · asked by Anonymous in Astronomy & Space

how far do you think we will get in space 1 century from now?
I think we will at least found extra terrestrial life,sent probes to other solar sysems and colonized mars.

2007-09-02 11:55:30 · 8 answers · asked by evlangelo 2 in Astronomy & Space

If f, g, & h are vectors and if,

f x g = h x g, does it follow that f = h? why or why not??

Thanks for your help...

2007-09-02 11:55:13 · 3 answers · asked by faisal.siddiqui 1 in Mathematics

Write the two equations in slope-intercept form and then determine how many solutions the system has.
x - 2y = 5
2x - 4y = 18

One
Infinite number
None

2007-09-02 11:45:04 · 3 answers · asked by freesia2water 2 in Mathematics

e.g spring tides are different but how?

2007-09-02 11:42:44 · 4 answers · asked by Jesse B 2 in Astronomy & Space

I'm writing a story about animals, and I need four major animals to represent the four elements of fire, water, earth and air. I have already found two - Swallow for air, Fox for fire. On the others, however, I'm stuck. Any suggestions?

Water -
This was hard due to the fact that there are so many to choose from. However, I need it to thrive & be able to (more easily) defeat other animals in a fight or escape [more] easily in water while also being able to travel at a moderate pace without water.

Earth -
This can pretty much be anything. It's prefered if it's nothing too small - no ants, for example. Speed would be nice but is not necessary.

You can also, if you wish, comment on my choices for fire and air. ^.^

2007-09-02 11:42:33 · 6 answers · asked by Aurosta L 1 in Zoology

2007-09-02 11:38:35 · 2 answers · asked by Anonymous in Engineering

Here is my homework questions,please help...
1. 2x²- 5x = 0
2. 3x² - 2x = 1
3. 2x² - x-15 = 0
4. t² - t- 6 = 0
5. 12x² - x - 6 = 0
6. m² + 12m +11m = 0
Please help me, I am so confused, and I'll give you best answer, if you get it right!

2007-09-02 11:37:34 · 5 answers · asked by Sarah M 2 in Mathematics

If three cards are drawn without replacement from a deck, find the probability that the third card is a face card, given that the first card was a queen and the second card was a 5.

Fractions
1/5
3/13
11/50
or
6/25

2007-09-02 11:27:35 · 4 answers · asked by Anonymous in Mathematics

2007-09-02 11:23:23 · 1 answers · asked by purplemonkey6662000 3 in Mathematics