Mathematics - 23 October 2007

and what is the best object that is small and cheap and easy to find like in walmart?i know this is a lot to ask... but something that also equals 179 grams? its for a project...

2007-10-23 11:34:06 · 2 answers · asked by Yuki 2

2007-10-23 11:29:26 · 1 answers · asked by Anonymous

Based on 300 generation at 20 years a generation, if only the last 3 generations are alive, that it takes 9 months to have a baby, and 54% of the population are female, how many children must each mother have to bring the population to present day figures of 6.6 billion?

Please show workings.

2007-10-23 11:27:21 · 8 answers · asked by Anonymous

1. use differentials to approxmiate rad(4.9)

2. for what value of x is the line tangent to y =x^2 parallel to the line tangent to y = x^(1/2)
(i know you have to get the derivative of y for both equation and put it equal to each other, but i cant figure it out..

3. A 17foot ladder is sliding down a wall at a rate of -5ft/sec. When the top of the ladder is 8 ft from the gound how fast is the foot of the ladder sliding away from the wall.

2007-10-23 11:21:27 · 1 answers · asked by Anonymous

Can anyone help me graph this and in a way explain to me how it is the equation my teacher gave me is:
/x/ + /y/ = 1 ; // is the absolute value. My teacher does not give me any numbers to plug in for x or y but she does suggest something about four, I believe it has to do with the plus and minus but I am not entirely sure. Please help thanks

2007-10-23 11:17:52 · 1 answers · asked by NA 1

i have no idea how to do this any help please:

xy=12

y= 2x+2

2007-10-23 11:16:51 · 3 answers · asked by HEy 3

Expand (1+x+2x^2)^6 in ascending powers of x upto and including x^3

I have tried to go around this problem by

expanding (1+y)^6

This gives me 1 + 6y + 15y^2 + 20y^3 +15y^4 +

6y^5 + y^6

I then substitute x + 2x^2 into the expansion

as y. I do this upto 20y^3

This gives 1 + 6x + 12x^2 + 15x^2 + 60x^4 +

20x^3 + 160x^6

I then simplify this to give my final answer of

1 + 6x + 27x^2 + 20x^3

I belive this is correct but online binomial

expansion calculators say the answer should be

1 + 6x + 27x^2 + 80x^3

I dont understand why i am not getting 80x^3

Please help?

2007-10-23 11:16:36 · 1 answers · asked by ur having a right laugh innit 2

I'm forgetting how to differentiate!

2007-10-23 11:03:52 · 3 answers · asked by RogerDodger 1

a) cos0=0.49
b) tan0=1

Next question.
2. Find O.
a) cos0=2/5

Thanks for helping.

2007-10-23 11:03:49 · 2 answers · asked by txlady 2

4x + 6 ≥ 34.

2007-10-23 11:03:18 · 7 answers · asked by catmuffin 1

The equation of a circle which contains the points A(2,-2)
B(-1,-3) and C(0,-1) is x^2+y^2+__x+__y+4=0

2007-10-23 10:56:32 · 12 answers · asked by ws 3

In other words, can I take each one independently (a=2 and b=3) as opposed to a fraction only (a/b=2/3 or b/a=3/2)?

2007-10-23 10:55:42 · 9 answers · asked by Tams4Gmat 1

A={2,4,8,16}
B={3,9,27,81}

A [upside down U symbol thing]= ? <---------WHATS THE ANSWER

2007-10-23 10:52:04 · 2 answers · asked by hunterhardman93 2

can you find what x equals

2007-10-23 10:42:36 · 11 answers · asked by Anonymous

a batch of light bulbs contains 9 yellow, 5 green, 7 reds, and 4 blue bulbs. three different light bulbs are randomly selected from the batch (WITHOUT REPLACEMENT).

find the probability that exactly two bulbs are blue

tnx for da help^ ^

2007-10-23 10:37:14 · 2 answers · asked by Siela 1

what is the average of 1/(x+2) and 1/(x-2)?

2007-10-23 10:35:37 · 7 answers · asked by Anonymous

The preportions are simply those of a square attatched to half of another congruent square, divided diagonally. The puzzle is to cut the figure into four pieces which are congruent in nature.

I dont have the figure but it is a trapezoid. Pretend there is a 4x4 square and a right triangle with a base of 4 and height of 4. So overall, the figure has a 8 base, 4 height, 4 across on top, and a diagonal connecting to the base.

2007-10-23 10:33:46 · 1 answers · asked by FSBB 1

2007-10-23 10:33:01 · 11 answers · asked by Anonymous

2007-10-23 10:31:47 · 9 answers · asked by Anonymous

2007-10-23 10:28:33 · 5 answers · asked by Anonymous

Calculus Maximization problem Please help!?
a) A rectangular parking is to be fenced on three sides leaving the fourth side open to the street. If there is 800 meters of fencing available, determine the dimensions that would produce the maximum area.
How would you create the derivatives.

2007-10-23 10:28:20 · 2 answers · asked by Anonymous

2007-10-23 10:24:36 · 12 answers · asked by ;) 3

2007-10-23 10:20:56 · 10 answers · asked by Anonymous

Ok so there is two types of special angles were working with the 30-60-90 Triangle and 45-45-90 triangle so my question is and were at the origin .So if i got 30 degrees how would i know how to find the value of x and y coordinates (is there anyway or will i have to remember the chart ?) like i see in my book that for a 45 degree angle the x= sq.rt of 2 and y= sq.rt of 2 will i have to remember these mentally or is there some way to calculate to get x and y from 45 degrees?

2007-10-23 10:20:49 · 2 answers · asked by Zoology 1

ok here is the problem:

[0 -6] _ [5 2] _ [2 -26] = [3 25]
[1 2] [4 3]X [3 -18] [2 24]


The capital X is the matrix that I need solved. The parenthesis about each other represents a 2x2 matrix. Sorry this is the best I could put it and it moves the bottom row over.

2007-10-23 10:17:47 · 1 answers · asked by lakewoodskater308 1

when 0=0 does it mean no solution,undefined, or many solutions?

2007-10-23 10:17:36 · 2 answers · asked by Anonymous

2007-10-23 10:08:49 · 6 answers · asked by Andres A 1

how to convert my scores into GPA .. 87,27% into GPA ???help please

2007-10-23 10:00:34 · 3 answers · asked by jewel 3

2007-10-23 09:52:43 · 12 answers · asked by bob 1

How is acceleration a function of Force and Mass??




Thanks for the help!!!

2007-10-23 09:48:36 · 3 answers · asked by Anonymous