Mathematics - 19 September 2007

Inductive reasoning:

Building block pattern:
HEIGHT: 1 2 3 4 5 ... n... 35
TOTAL BLOCKS: 1 4 ? ? ? ? ?

2007-09-19 23:56:47 · 2 answers · asked by ME® 5

If a randomly selected month of a randomly selected year has five sundays, what is the probability that it s the month of July ?

[Note: Use correct definition of a leap year. Every fourth year is not a leap year. ]

2007-09-19 23:29:48 · 4 answers · asked by Madhukar 7

Fractional indicies.
How do i get the answer to:
4(25) to the power of a half??

Does this: ^ mean power??

2007-09-19 23:21:46 · 2 answers · asked by Anonymous

Integrate sqrt( e^(2t) + 2 + e^(-2t)) dt from t = 0 to t = ln(3).

Thanks.

2007-09-19 23:19:45 · 3 answers · asked by Bouktaul 2

1 ?

2007-09-19 23:05:56 · 11 answers · asked by Gabbylikesit 1

if f(x) ={1-x^2 if 0 lessthen equal to x less than equal to 1
1+ x/2 if 1 Show that f is not continuous on [0,2].
Please Show steps!

2007-09-19 22:36:56 · 2 answers · asked by Pedro Q 3

Sally, Fred and Peta went fishing

Sally caught a fish 2/3 of a kg
Fred caught a fish 3/5 of a kg
Peta caught a fish 4/7 of a kg

Thanks 4 da help

2007-09-19 21:41:51 · 3 answers · asked by Anonymous

Which axoim is illustrated by the equation 3(x+2)=3(2+x). I'm guessing that it's commutative property of addition, but I'm not sure.

2007-09-19 21:41:02 · 10 answers · asked by Aiuta 1

SHOW ALL WORKING:

2x+7=x-5

2007-09-19 20:55:55 · 12 answers · asked by Anonymous

so prime umbers have patterns?

2007-09-19 20:46:24 · 9 answers · asked by hamada 2

Been a while since I've used this stuff, someone refresh my memory please.

2x+3y=12
-2x

3y=12-2x
-3
y=12/3-2x

y=4-2/3x ?

I know that is wrong lol.. like i said been a while since i used this stuff. Thanks in advance!

2007-09-19 20:42:05 · 9 answers · asked by tentoesdown 2

Please help me find dy/dx of the
arctan (y/x) = 1/2 * ln(x^2+y^2)
I don't know what kind of this function is to find the derivative. Is it implicit function?

2007-09-19 20:36:25 · 3 answers · asked by Phuong Nam 2

2007-09-19 20:29:59 · 7 answers · asked by srikantkumarrath r 1

2007-09-19 20:10:42 · 6 answers · asked by Anonymous

The lowest common multiple of 6, 15 and x is 150. Write down the least value of x.

The working solutions:

1) First do the LCM working...Thus the LCM is 2,3,5 and 1.

Then 6 = 2 * 3
15 = 5*3

Least value of x = 5^2 =25

I don't understand about the last part...Why they have to use 5^2 to get 25? In the LCM working, there is only 1 five...So, how and why they mulitply the 5 twice to get 25? I don't understand....Please help..You could also explain the question in your own method

2007-09-19 20:09:20 · 3 answers · asked by Anonymous

All I need is the equation for the following problem:
Bart's age is one third of his mother's age. Seven years ago, his age was one fifth hers. How old are both now?


Can someone tell me the equation for this problem?

2007-09-19 20:07:37 · 2 answers · asked by xhollywoodthrash 1

1. In the game of tic-tac-toe, what is the greatest number of squares that may be left unmarked when a game is won?

2. The number of rings in the olympic flag is a prime number that is a factor of 105, 20, and 30. How many rings are there?

3. The span of the Golden Gate Bridge in San Francisco is 1080 feet less than a mile. How long is the bridge?

4. The number of days that Mercury takes to evolve around the sun is a palindromic number, each digit is a cube greater than 1, how many days is one revolution around the sun?

2007-09-19 19:32:28 · 4 answers · asked by julia 1

for calculating land, pls. tell me how to change 2 beegha 17 biswa into acre

2007-09-19 19:18:29 · 2 answers · asked by tea2 1

Ok I understand how to simplify in class with these easy examples we get but I get hom and I get

x^2 x^6
______
x^3

Now when we get these x's I get confused. Any help and explanation is appreciated. Also if you know any good sites that would be helpfull. Thanks

2007-09-19 18:50:16 · 8 answers · asked by BrandyJo 3

I am looking for a women mathematician who was also a scientist and translator. She was born in France during the Enlightenment and was the daughter of an aristocratic family.
Please help!

2007-09-19 18:36:53 · 2 answers · asked by Anonymous

cos π/5 + cos 3π/5 = 1/2

This one is very troubling...

^_^

2007-09-19 18:35:17 · 4 answers · asked by kevin! 5

solve for the angle theta in the following equation

2007-09-19 18:30:07 · 3 answers · asked by Anonymous

how do i differentiate this expression...

just the answer would do as well... to tell you the truth...

(sinx)^7

2007-09-19 18:15:23 · 8 answers · asked by vitania 2

solve the system of xy = 1, x + y = a by using the identity:

((x -y) / 2)^2 = ((x + y) / 2)^2 - xy

??????? I have no idea ??????????

2007-09-19 18:00:57 · 7 answers · asked by busy bee 2

I can never find one, please give me a link so i can buy one with a credit card

2007-09-19 17:57:06 · 1 answers · asked by Dean 1

Is there a way of expanding the formula a/(b+c) into something I might be able to do algebra with? Thanks.

2007-09-19 17:56:08 · 4 answers · asked by Harb Frame 3

write the equation of the line in slope- intercept form

2007-09-19 17:34:20 · 8 answers · asked by myownworkchief 2

2007-09-19 17:25:27 · 5 answers · asked by muhammad ibrahim 1

well iam doing this lecture competition ..
and my topic is prime numbers.. so do help me in giving some info about them ..

2007-09-19 17:07:45 · 1 answers · asked by Timothy P 1

Alright so the problem is as follows...

x+2 / 2x-3 > ((with line under it)) 1

I can get pretty far into solving it...

(x+2 / 2x-3) - (2x+3 / 2x +3) >line 0

5 - x / 2x - 3 >line 0

then theres where i get stuck... can someone explain where the answer

3/2 < X < 5 comes out of that?

2007-09-19 17:07:00 · 1 answers · asked by Anonymous