Science & Mathematics - 4 August 2007

A family makes a 43.25 km trip in 5.5 hours. On the first part of the trip they crossed a lake in a canoe paddling at 12 km/h. For the rest of the trip, they hiked on a scenic trail. If their average walking speed was 5 km/h, how far did they walk?: *
A. 2.25 km
B..25 km
C. 11.25 km
D. 16.25 km

2007-08-04 10:55:52 · 2 answers · asked by ebillar 1 in Mathematics

I took 4 laxitive tablets yesterday, and, today and still nothing. My stomach(lower belly) is very.very bloated. Can someone please help. Also would thgis problem make me gain weight.

2007-08-04 10:55:27 · 9 answers · asked by Anonymous in Medicine

C (x) = 1.5x / 100-x

thank you

2007-08-04 10:54:28 · 1 answers · asked by quepid622 1 in Mathematics

∫ sec(2x)tan(2x)dx

i got 1/cos(2x)

calculator gives me 1/(2cos(2x))

2007-08-04 10:50:26 · 3 answers · asked by Anonymous in Mathematics

I bought it from an auction and would like to know about it. This is the info
Towa Astronomical Telescope
Model # 337
D 80 mm
F 1200 mm
Does anyone have or know where I could purchase a book or a website about the telescope?
That would be great!

2007-08-04 10:50:22 · 3 answers · asked by Anonymous in Astronomy & Space

Hi,

And if everything has a vibration and frequency, doesn't it mean that everything has a sound and movement?

PLEASE DO NOT ANSWER WITH LINKS.

Thanks.

2007-08-04 10:46:45 · 5 answers · asked by survey taker 2 in Other - Science

Which pain killers are the worst for your body, mind and soul

2007-08-04 10:43:20 · 5 answers · asked by Anonymous in Medicine

what can cause it and how long canit last

2007-08-04 10:39:07 · 1 answers · asked by Dana F 1 in Physics

1) Using power = current X voltage, find the current drawn by a 1200 w hair dryer conected to 120 V. Answer in unitd of A.

2) A typical television dissipates 265 W when plugged into a 115 V outlet. Find the resistance of the television. Answer in units of ohms

2007-08-04 10:37:20 · 4 answers · asked by Anonymous in Engineering

possible choices....

a. f(x, y, z) = e^xy + ye^z
b. f(x, y, z) = e^yz + xe^y
c. f(x, y, z) = e^xz + ze^x
d. f(x, y, z) = e^xy + xe^z
e. f(x, y, z) = e^yz + ze^y
f. f(x, y, z) = e^xz + ye^x
g. f(x, y, z) = e^xy + ze^z
h. f(x, y, z) = e^yz + ye^y
i. f(x, y, z) = e^xz + xe^x
j. none of these

2007-08-04 10:31:54 · 2 answers · asked by Doug 2 in Mathematics

how many times you can arrange the word "mississippi"?

2007-08-04 10:31:05 · 2 answers · asked by Anonymous in Mathematics

lim (1+8x)^(cscx)
x->0

2007-08-04 10:28:50 · 2 answers · asked by chimstr 1 in Mathematics

plz solve with steps. its answer is 10. but i don't know how .

2007-08-04 10:21:14 · 4 answers · asked by Lolla 2 in Mathematics

2007-08-04 10:15:15 · 2 answers · asked by Matt 2 in Botany

2007-08-04 09:53:55 · 9 answers · asked by blklightz 4 in Astronomy & Space

I am trying to run a 20 amp circuit 300 feet to a place I need electricity. I already have 12 gauge exterior wire but at this distance, I don't know what kind of amperage it could handle. So can I run two lengths in parallel in order to operate a higher amperage circuit?

Maybe a parallel of about 200 feet with a single run for the remaining 100 feet. Will either of these methods work?

Thank you in advance.
Dave

2007-08-04 09:44:44 · 10 answers · asked by Wolfman 1 in Engineering

Why, at room temp & pressure, is the dense metal mercury a liquid? It sort of goes against the grain. Are there any other elements liquid at room temp & pressure?

2007-08-04 09:42:03 · 10 answers · asked by Michael K 1 in Physics

Solve .

x varies inversely as y^2 . If x = 6 when y = 20 , find x when y = 4 .


Problem 2

Rewrite the rational expression as an equivalent rational expression with the given denominator .

(5) / (4x) = / (16x^2)

2007-08-04 09:35:36 · 4 answers · asked by Anonymous in Mathematics

What happens if a car is dropped from 625 feet and it hits water or solid ground? what would it be simular to?

2007-08-04 09:34:32 · 11 answers · asked by wallingfordjoe2 1 in Physics

f(x) = tan ^-1 (x) / (( root (2-x^2))

2007-08-04 09:27:17 · 3 answers · asked by chimstr 1 in Mathematics

If you have to guess a number 1-5, and only one of them is correct, there is a 20% chance to guess correctly, I got that so far.

So, the number 1-5 that you have to guess is always random. Is there a way to find some pattern in it?

I mean, If "2" is the random number you need to guess, 4 times in a row, isnt the % chance it will be 2 again actually lower than 20%?

How can you find the number with the highest %chance of being correct if you have a long string of the random numbers 1-5

2007-08-04 09:26:28 · 4 answers · asked by jk1337 1 in Mathematics

Birth can't be the equal but opposite reaction to death because the population is growing. Yet birth is the opposite of death.

Can anyone make sense out of it?

2007-08-04 09:23:39 · 11 answers · asked by Ricky M 1 in Other - Science

1. Perimeter of a triangle
The lengths of the sides of a triangle are 1, 2, and 2 find a rational expression of the triangle x 2x 3x

2. An investment of $10,000 in 1997 in the Spartan Investment Grade Bond Fund grew to $14,309.61 in 2—2 Use the formula( r= (s ) 1/n -1 )to find the 5 year annual return P

3. if g(x)= -7x+2, find g(-6)

4. simplify: 48b 6/12b 2

5. find (-8x 2 y 3 - 3xy 2 ) + (5x 2 y 3 - xy 2 )

6. Factor 2p 2 -9p+10

2007-08-04 09:18:12 · 2 answers · asked by austin 1 in Mathematics

Determine if the following series converge or diverge:

A. summation of (sin 2 / pi)^n from n=0 to infinity
B. summation of (1/n^(1/3)) from n=1 to infinity
C. summation of (e^n / (e^n +1)) from n=1 to infinity

2007-08-04 09:14:03 · 5 answers · asked by Anonymous in Mathematics

If there is a race with 5 competitors, all equally skilled, is there any way to accurately predict the outcome? Or give yourself an advantage?

2007-08-04 09:13:23 · 4 answers · asked by jk1337 1 in Mathematics

Perform the indicated operation .

Simplify if possible .

(18) / (2x) + (54) / ( 9x)



Problem 2


Solve the problem.
A board of length (5) / (x + 6 ) inches was cut into two pieces. If one piece is ( 2) / ( x - 6 ) inches, express the length of the other board as a rational expression.

2007-08-04 09:12:07 · 5 answers · asked by Anonymous in Mathematics

Integrate (2x) / ((x+2)(x+1)) dx.

Let P(x) = 3x^2 - 5x^3 +7x^4 + 3x^5 be the fifth degree Taylor polynomial for the function f(x) about x=0. What is the value of f'''(0)?

2007-08-04 09:08:58 · 2 answers · asked by Anonymous in Mathematics

The basic function for like a micro chip is to erm give the signal, 1 or 0 right? so like whats acutlaly inside these chips? how do they work?

2007-08-04 09:05:11 · 1 answers · asked by Anonymous in Other - Science

2x^2 over 3 times 6 over x^6


a^2b^6 over 4 times 2 over a^2b^3


4 over x+2 times x^2-4 over 4x-8


z^2-z-6 over z-6 times z^2-6z over z^2 +2z-15


w^2-16 over w times 3 over 4-w

2007-08-04 09:04:30 · 2 answers · asked by Anonymous in Mathematics

Million, billion, trillion, quadrillion, quintillion - how high does it go until you just have to start saying 'million million million...."

Is a zillion a real number?

2007-08-04 09:02:14 · 3 answers · asked by Anonymous in Mathematics