Mathematics - 27 July 2007

2007-07-27 05:52:59 · 5 answers · asked by Love Exists? 6

I don't want to be left out of "Stupid Question Day"

2007-07-27 05:50:47 · 27 answers · asked by Anonymous

2007-07-27 05:48:04 · 6 answers · asked by V.S. 2

How many liters of a 60% alcohol solution must be mixed with 90 liters of a 90% solution to get a 80% solution?

2007-07-27 05:46:14 · 6 answers · asked by koka 1

2007-07-27 05:45:30 · 4 answers · asked by roan 2

A rectangular Persian carpet has a perimeter of 200 inches. The length of the carpet is 20 in. more than the width. What are the dimensions of the carpet?

2007-07-27 05:44:11 · 5 answers · asked by koka 1

in cubic meters

2007-07-27 05:42:18 · 6 answers · asked by biggn 1

Please explain it on a easy way. Thank you

2007-07-27 05:36:42 · 3 answers · asked by Anonymous

Find an algebraic expression for the following problem. The area of a rectangle with a length of y meters and a width of 2 meters.

2007-07-27 05:29:41 · 6 answers · asked by whatever 1

12c/15d

This simplifies to 4c/5d, right? Even though c and d are not necessarily the same value? I just can't remember.

2007-07-27 05:20:37 · 7 answers · asked by kae 4

One statement of Boyle's Law is that the pressure of a gas varies inversely as the volume for constant temperature. If a certain gas occupies 650cm^3 when the pressure is 230 kPa and the volume is increasing at the rate of 20.0 cm^3/min., how fast is the pressure changing when the volume is 810 cm^3?

2007-07-27 05:11:40 · 2 answers · asked by Anonymous

A. Child's tickets= $4, adult's ticket= $8

B. Child's tickets= $2, adult's ticket= $4

C. Child's tickets= $5.60, adult's ticket= $11.20

D. Child's tickets= $7, adults ticket= $14

please need ur help plzzz help me!!

2007-07-27 05:04:22 · 6 answers · asked by Anonymous

Solve the equation for y. - 2x - y + 9 = 0

A. y = 2x + 9
B. y = 2x - 9
C. y = -9x + 2
D. y = 9 - 2x

2007-07-27 04:57:52 · 9 answers · asked by whatever 1

what are the steps to calculate this?

35/125? i know the answer comes out to 28%

2007-07-27 04:54:35 · 5 answers · asked by angrybull2000 2

What is the arc length with y greater than or equal to 0 from x=2 and x=3?

2007-07-27 04:32:35 · 2 answers · asked by Christy R 1

2007-07-27 04:25:58 · 5 answers · asked by Sam 2

2007-07-27 04:19:52 · 2 answers · asked by Anonymous

Yesterday I came across a very interesting question at

http://answers.yahoo.com/question/index;_ylt=AiZ_9436.iY9WMwEiVbaSGTsy6IX?qid=20070726145922AAp4oEw&show=7#profile-info-9ea5b56c0000f60ba86311a887f43581aa involving closures of open balls. Then, I started wondering about a related prolem. Let X be a metric space with metric d. Is there any necessary or sufficient or both condition so that the interior of a closed ball be the open ball of same center and radius?

In the euclidean spaces R^n, this is always true. But if you take R^n with the discrete metric, than this doesn't hold. The closed ball of center at 0 and radius 1 is the whole space and coincides with its interior. But the open ball of center 0 and radius 1 is {0}.

Is anyone interested in thinking about this?
Thank you
Steiner

2007-07-27 04:17:41 · 3 answers · asked by Steiner 7

where i is the imaginary unit, such that i = √(-1)

2007-07-27 04:06:09 · 5 answers · asked by WOMBAT, Manliness Expert 7

2007-07-27 04:02:10 · 7 answers · asked by Anonymous

2007-07-27 03:56:47 · 17 answers · asked by Anonymous

1. Write in simplest form:
x^2 - 6x + 9 / (over) x - 3

2. Subtract. Write your answer in simplest form:
9 / (over) y - 7 minus 1 / (over) y + 1

2007-07-27 03:43:05 · 6 answers · asked by casper5 3

Show your work: (type x-square as x^2 unless using a superscript feature).

b) Use microsoft excel to plot the points found in part a and to sketch the graph.

2007-07-27 03:40:27 · 5 answers · asked by yuleydis77 1

2007-07-27 03:15:26 · 8 answers · asked by williams.adrienne 1

2007-07-27 02:53:51 · 6 answers · asked by williams.adrienne 1

2007-07-27 02:48:22 · 11 answers · asked by williams.adrienne 1

I need help with a strategy to find the integral of:
1 / (x(x^4+1)) dx.

I was thinking maybe partial fractions.. but since x^4+1 can't be factored any farther, I'm not quite sure what form to put in the numerator (a, ax+b, ax^2+bx+c, ect). Any help would be much appreciated. Thanks!

2007-07-27 02:34:01 · 4 answers · asked by Anonymous

Probability, let S={1,2,3,4,5,6} E={2,4,6} F={1,3,5} and G={5,6}
a. find the event EnFnG

b. are the events F and G complementary?

2007-07-27 02:21:07 · 1 answers · asked by jeff 1

Find the maximum value of the function f(x,y,z)= x+2y-3z subject to the constraint z=4x^2+y^2

2007-07-27 02:13:24 · 4 answers · asked by jeff 1

2007-07-27 02:02:17 · 19 answers · asked by Darian 3