Science & Mathematics - 25 September 2007

int (2, infinity) 1dx/(x+3)^(3/2)

2007-09-25 15:07:59 · 3 answers · asked by Anonymous in Mathematics

how do i find the zeroes of this function.
f(x) = x^3 - 2x^2 - 4x

How do I solve this

2007-09-25 15:07:11 · 3 answers · asked by Big Bob 2 in Mathematics

I feel pretty stupid, this one stumped me and my husband. There is a pic of a dog, Duke. The scale factor from Duke to the drawing is 12-1/2%. He needs to figure how long and how tall Duke is. Then the last question is what setting would you put a copier on, 50 to 200%, to make a life size poster of Duke. I am not quite sure how to help him on this one. Please Help!!

2007-09-25 15:04:35 · 6 answers · asked by umbarger 2 in Mathematics

I think a tiger is bigger.

2007-09-25 15:02:29 · 10 answers · asked by shaddyratt 1 in Zoology

What plate boundary?

2007-09-25 15:00:17 · 2 answers · asked by sportman16977 2 in Earth Sciences & Geology

2007-09-25 14:56:54 · 4 answers · asked by Trigo L 1 in Mathematics

#1) An object with mass m1 = 5.00 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley and is then fastened to a hanging object with mass m2 = 12.0 kg. Find the acceleration of each object and the tension in the cable.
#2) Two packing crates of masses m1 = 10.0 kg and m2 = 3.50 kg are connected by a light string that passes over a frictionless pulley. The 3.50 kg crate lies on a smooth incline of angle 40.0°. Find the acceleration of the 3.50 kg crate.

2007-09-25 14:56:42 · 1 answers · asked by venney2004 2 in Physics

Please breakdown the problem and show each step.

2007-09-25 14:53:47 · 2 answers · asked by Sam Dali 2 in Mathematics

7. The students in ms changs class decide to order water bottles that advertise the walkathon.Malliik obtains 2 different quotes for the costs of the bottles.

Fill it up charges $4 per bottle

Bottles by bob charges $25 plus $3 per bottle

a. for each company, write an equation maliik could use to calculate the cost for any number of bottles.

b. which company do you think the class should buy water bottles from? what factors influenced your decision?

c.For what number of water bottles is the cost the same for both companies?

8. The equation C=5n represents the cost(c) in dollars for n(variable) caps that advertise the walkathon. Which of the following pairs of numbers could represent a number of caps and the cost for that number of caps, (n,c)?
MULTIPLE CHOICE:
A.(0,5) b.(3, 15) c.(15, 60) d.(5, 1)

2007-09-25 14:52:16 · 1 answers · asked by an0nym0us 1 in Mathematics

2007-09-25 14:51:17 · 2 answers · asked by nala 1 in Mathematics

2007-09-25 14:49:13 · 3 answers · asked by nala 1 in Mathematics

I mean, I believe in Christ and everything but I cant help but wonder, if God made everything, where did God come from?

2007-09-25 14:45:30 · 11 answers · asked by Ac 1 in Other - Science

2007-09-25 14:42:50 · 3 answers · asked by "T"Bird 1 in Geography

Just always wondered about it, and wanting to find out if anyone has gotten he answer from personal experience.

2007-09-25 14:41:08 · 9 answers · asked by Dave K 2 in Physics

1. Hoshi walks 10 meters in 3 seconds.

a. what is her walking rate?

b.at this rate, how long does it take her to walk 100 meters?

c.suppose she walks this same rate for 50 seconds. how far does she walk?

d.Write an equation that represents the distance(d) that hoshi walks in t(variable) seconds.

2.Milo walks 40 meters in 15 seconds and mira walks 30 meters in10 seconds.Whose walking rate is faster?

2007-09-25 14:39:58 · 11 answers · asked by an0nym0us 1 in Mathematics

All the bananas we eat come from trees that are produced through "cuttings" — a stem from an existing tree is planted in the ground, resulting in a new tree. Thus, each tree is a clone of another. Why would growers find it advantageous to produce an enormous series of identical clones, rather than using trees that reproduce sexually?

2007-09-25 14:35:06 · 2 answers · asked by alan82nd 1 in Biology

i believe there is no end to the world of the small just like there is no end to the vastness of the universe.no matter how many times we cut something it becomes smaller.atom photon etc.something cannot become nothing no matter how many times you cut it..?

2007-09-25 14:33:34 · 5 answers · asked by mark w 1 in Physics

What are some insulators?

2007-09-25 14:32:59 · 8 answers · asked by JayTM 1 in Other - Science

Imagine you just started making new account. You start with Level 1, 101 points (100 for making new account +1 for visiting). I will never ask question. You keep getting Best Answer everytime you answer a question. You answer questions and voting until you reached to the limit everyday. Using the point system chart, how many days will your new account will be at Level 5?

(I'm too lazy to figure it out by myself, even when I'm High School student)

2007-09-25 14:28:22 · 1 answers · asked by Darkray 6 in Mathematics

2007-09-25 14:17:25 · 20 answers · asked by Shaz S 1 in Astronomy & Space

2007-09-25 14:16:57 · 12 answers · asked by Tania T 1 in Chemistry

I have a mixture of dry sand and sugar, I have to separate the mixes in under 10 minutes..... i'm stumped! I don't know what technique to use.

Please help me!

2007-09-25 14:12:12 · 6 answers · asked by iyikka14 3 in Chemistry

Integral from 1 to 11 of ((11)/(cuberoot(x-1))dx

2007-09-25 14:09:15 · 2 answers · asked by garrett m 1 in Mathematics

I hear many people say its humid and the humidty is high but what does it mean? I have heard it used during hot days and chilly days but what does it really refer to?

2007-09-25 14:08:21 · 10 answers · asked by mc_vikram21 1 in Weather

Is it because they're spinning? If someone could direct me to a good website explaining the physics behind the sound I'd be forever grateful! :)

2007-09-25 14:04:20 · 2 answers · asked by mudstew 3 in Earth Sciences & Geology

Find equations of the tangent planes to the sphere x^2 - 6x + y^2 - 8y + z^2 + 2z = 10 with a normal vector <2,2,1>. Hint, first find the center and radius of the sphere and use the normal to go from the center to the two points of tangency that are on the sphere.

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So I found the center and radius (3,4,-1) r=6
The length of the normal is 3 so I need to multiply the vector by 2 to find the points.

But how would the equations look?
Is it just <±t+4x, ±t+4y, ±t-z> = ?
So that any number t would find the point?

2007-09-25 14:03:22 · 1 answers · asked by James B 3 in Mathematics

Please help ( : I would greatly appriciate it.

2007-09-25 14:01:41 · 8 answers · asked by Anonymous in Astronomy & Space

When K3PO4 is dissolved in water, why does the solution turn basic?

KOH is strong and H3po4 is weak

If K is the salt of KOH, then K would make KOH with water which would form H+ ions and turn the solution acidic?

I know its wrong, I just dont know why..

If someone could help.. thanks..

2007-09-25 14:01:41 · 3 answers · asked by Dhruv 1 in Chemistry

2007-09-25 14:01:28 · 6 answers · asked by evans m 1 in Physics

2007-09-25 14:00:18 · 5 answers · asked by skittles 1 in Chemistry