Science & Mathematics - 23 October 2007

4 3/16

2007-10-23 18:55:37 · 10 answers · asked by susan j 1 in Mathematics

There are two answers to sin(x)=.703x, one of which is 0, but how do you get the other? I'm drawing a blank here.

2007-10-23 18:54:40 · 3 answers · asked by jon u 1 in Mathematics

new ocean floor forms at mid ocean ridges, but earth is now growing
this means that elsewhere part of Earths lithosphere is being returned to the athenosphere
where does this happen?
any correct anwser is best anwser

2007-10-23 18:49:19 · 1 answers · asked by $$$ ahmad $$$ ISLAM ROX 2 in Geography

Solve in the real number system:

6x^3 + 11x^2 - 4x - 4 = 0

How? Thank you.

2007-10-23 18:45:59 · 7 answers · asked by labelapark 6 in Mathematics

A step-by-step walkthrough would be appreciated

2007-10-23 18:44:03 · 4 answers · asked by Conservative Jesus 1 in Mathematics

2007-10-23 18:43:44 · 2 answers · asked by Brennen 2 in Medicine

2007-10-23 18:42:47 · 3 answers · asked by lillian c 1 in Earth Sciences & Geology

I've had this strange long-time feeling that someone that has passed needs or wants to speak to me or send me a message. I have an idea who, but don't know. Could someone help me?

2007-10-23 18:42:18 · 12 answers · asked by CharJ, 6 in Paranormal Phenomena

2007-10-23 18:32:55 · 7 answers · asked by Meh 2 in Mathematics

All I have been hearing is how the world will end in 2012. However, I never hear any info about why it will NOT end. Any information???

2007-10-23 18:21:11 · 10 answers · asked by katie9790 1 in Earth Sciences & Geology

A 725 g metal wire is bent into the shape of a hoop 58.0 cm in diameter. Six wire spokes, each of mass 113 g, are added from the center of the hoop to the rim. What is the moment of inertia of this object about an axis perpendicular to it through its center?

2007-10-23 18:19:45 · 4 answers · asked by KT 1 in Physics

I instinctively always wanted to climb everything starting from the day i was born. By the time i was 2 i was climbing trees as well as most 10 year olds. I was able to climb up a rope over 20 ft high when i was in kindergarten the 2nd one in the history of the school to do it for my age group and its an old school. My arm span is 2 inches above my hieght compared to the average person's who's arm span is typically below their height. I continued to get better at climbing and getting stronger. I could climb up the rope using only my arms easly when i turned 12. Im now 14 and im incredible at climbing. Im the strongest kid in the grade (and not the biggest). I still desire to climb everything. I know im human but is it possible some genes from thousands of years ago that are dormant in most people got released in me?

2007-10-23 18:16:45 · 9 answers · asked by Anonymous in Biology

2007-10-23 18:14:26 · 2 answers · asked by Anonymous in Other - Science

if a star is 47 light years away it took 47 years for the light to travel from that star to reach us ?

do have it right ? I'm trying to learn it the easiest way

2007-10-23 18:12:29 · 3 answers · asked by Kara 2 in Astronomy & Space

2007-10-23 18:10:44 · 12 answers · asked by simonaputinelu 1 in Mathematics

the matrix has 7 squares going across and 7 going down.
the top line going across reads +/- 3 5 1 2 4 8 and the first column going down reads +/- 7 6 0 5 7 2.
there is a second matrix with the same number of boxes but there are numbers filled in through out.

2007-10-23 18:10:21 · 1 answers · asked by Star 4 in Mathematics

2007-10-23 18:09:42 · 7 answers · asked by mztana820 1 in Mathematics

A car traveling along a level road at speed 'v' slams on the brakes and skids to a stop. If the force of friction on the car is half the car's weight, how far does the car slide? (Hint: Use the work-energy theorem and solve for 'd')

2007-10-23 18:08:16 · 2 answers · asked by jalisamarie12 1 in Physics

Here is a brief and fascinating article that will blow your mind.

http://en.wikipedia.org/wiki/Technological_singularity

What do you think? Will this actually happen one day?

2007-10-23 18:03:58 · 2 answers · asked by Zezo Zeze Zadfrack 1 in Other - Science

Find the coordinates of the image of quadrilateral Q(-6, -1), U(-4, 6), A(0, 7), D(3, 5), after performing a reflection over the line y = x. Show all work using the appropriate reflection matrix.

2007-10-23 18:02:45 · 3 answers · asked by Anonymous in Mathematics

My answer: probably things we cannot even conceive of right now. Who knows what leaps we might make? And from there we will see advancements beyond our present imagination.

I would guess that in the future humans will live much, much longer.

And another possibility is the concept of the "technological singularity". If you havn't checked this out just google it and read an article about it. It will blow your mind!

What do you think we will see in the future?

2007-10-23 18:00:12 · 1 answers · asked by Zezo Zeze Zadfrack 1 in Other - Science

2007-10-23 17:58:20 · 8 answers · asked by Anonymous in Astronomy & Space

CALCULUS: LIMITS o' Natural Log!!?
lim as x approaches infinity (+) ...ln [(x^.5) + 5] divided by ln x...i believe it is 1/2...i may be wrong please help...i need by tomorrow !! no lopital plz

2007-10-23 17:57:27 · 3 answers · asked by Kenichi S 2 in Mathematics

Is this true? If so, why?

Moms doctor also said not to take it but to instead take multi vitamin, but that only has 16% calcuim compared to Calcium Citrate.

What's good to take for Diverticulosis, Physillium (doc said it's weaker) or Metamucil? Mom doubts the doctor since she thinks she said Metamucil since it's a drug not a herb.

This one doctor said to take Acipex at night and the new doc for my mom said to take it with an empty stomach, which one should my mom take?

This new doctor is just confusing.

2007-10-23 17:57:00 · 2 answers · asked by ? 6 in Medicine

For example that new superbug evolved so that it is now drug resistant

2007-10-23 17:52:50 · 7 answers · asked by john d 2 in Biology

Given the function f(x) = 3x^3-10x^2+7x+10
Write f(x) as a product of linear factors.
Ok so this is what I have done so far:
P: +-1, +-2, +-5,+-10
Q: +-1, +-3
P/Q = +-1,+-2,+-5,+-10, +-1/3, +- 2/3, +-5/3, +-10/3

On the calculator I pressed 2nd trace and value and found that when x= -2/3, y=0. So that has to be one zero for sure. Just to make sure it was, I used synthetic division and the remainder was zero.
-2/3 / 3 -10 7 10
___-2_ 8_-10____
3 -12 15 -10
so I brought the equation down
3x^2-12x-15
factored: 3(x-5)(x+1)
x= 5, x = -1
Now this is where I am stuck..when I graphed the first equation..it only had one zero....which was -2/3
Now how do I write f(x) as a product of linear factors
So basically writing the same equation as given in a different form with all zeros.
Can someone help me please?
Thanks.

2007-10-23 17:51:08 · 2 answers · asked by Anonymous in Mathematics

The plane's altitude is 6 miles. Suppose that when the distance between the plane and the radar station is 10 miles, this distance is increasing at a rate of 500 miles per hour. Find the speed of the plane.

^this is all that is given and the following is my own attempt.
I'm in calculus and it's dealing with relative rate.

also ive gotten this so far but cant seem to get the right answer, although i dont know what it is. i am using an online homework machine so it tells me when its right or wrong.

given: when g=10miles dg/dt=500 mi/h
goal: find d(angle)/dt
Equation: Tan(angle) = 1/6 * g
soln: sec^2(angle) * d(angle)/dt = d/dt(1/6*g)
136/36 *d(angle)/dt = 1/6 * dg/dt
136/36 * d(angle)/dt = 500/6
d(angle)/dt = 500/6 * 36/136
d(angle)/dt = 3000/136

and that is not hte answer and i'm not understanding what i am doing wrong.

please help!!!

2007-10-23 17:50:05 · 2 answers · asked by Anonymous in Mathematics

97 out of 100 people cannot detect the difference in taste between new(healthier) and old cooking oils. In a random sample of 1000 individuals, what is the probability of

a) at least 40 can taste the difference between the oils?

b) at most 5% can taste the difference between the oils?

2007-10-23 17:45:23 · 1 answers · asked by ? 3 in Mathematics

Bill flips two coins, and John flips three coins. What is the probability that
Bill observed at least as many heads as John ?

2007-10-23 17:41:42 · 4 answers · asked by Josh M 1 in Mathematics

An iceboat is at rest on a frictionless frozen lake when a sudden wind exerts a constant force of 212 N, toward east, on the boat. Due to the angle of the sail, the wind causes the boat to slide in a straight line for a distance of 7.0 m in a direction 20° north of east.
(a) What is the kinetic energy of the iceboat at the end of that 7.0 m?
kJ
(b) The boat has a mass of 300 kg. What is the speed of the boat?
m/s

2007-10-23 17:41:22 · 1 answers · asked by Anonymous in Physics