Mathematics - 23 July 2006

I realize in any random sample, the odds of any two people having the same birthday is approx. 1:365.

but doesn't that go up in a non-random sampling? IE, don't you have to multiply the chances of two people being brothers-in-law by the chances of two people sharing the same birthday or something?

So what are the chances of two people sharing the same birthday AND of one marrying the sister of the other?

2006-07-23 13:36:17 · 7 answers · asked by stupidbushtricks 2

a)Solve the differential equation using K as your arbitrary constant
y' = xy
b) 3. [SCalcCC2 7.3.08.]
Solve the differential equation. Let C represent an arbitrary constant.
dz/dt+exp(t+z)=0
c)Find the solution of the differential equation that satisfies the given initial condition
(x+2ysqrt(x^2+1))(dy/dx)=0, y(0)=1

2006-07-23 13:25:45 · 3 answers · asked by Xpyoz 2

it's between 1-100

2006-07-23 13:22:54 · 52 answers · asked by Summer 2

Hey everyone I was wondering if anyone knew where to find a calculator program with imput as high as 1000 digits.

2006-07-23 13:22:00 · 4 answers · asked by tjcsonofallnations 3

The instructor of an introductory computer course wants to make a wall chart of a computer desktop for her students. To make it as realistic as possible, she would like the desktop icons to be proportional to the size of her 6’X6’ chart. If the icons on her 15” x 15” PC screen are 3/8” X 3/8”, how large should they be on her wall chart?

2006-07-23 13:02:21 · 7 answers · asked by Anonymous

The trigonometric values that I am able to calculate are
sin, cos, and tan.
Secant, cosecant, and cotangent can also be calculated
using the calculator?
I am assuming that sin raised to the negative (-1)
is the inverse sine function?

2006-07-23 13:00:49 · 3 answers · asked by tjhauck2001 2

2006-07-23 12:51:09 · 13 answers · asked by Anonymous

please show me how you did this

2006-07-23 12:48:29 · 8 answers · asked by Anonymous

2006-07-23 12:39:50 · 8 answers · asked by DIPPIN IT 1

2006-07-23 12:32:03 · 5 answers · asked by Esmeralda V 1

Mathematics is said to be the common thread. Why are we so poorly taught that which is the key to understanding?

2006-07-23 12:31:50 · 20 answers · asked by Anonymous

2006-07-23 12:29:37 · 8 answers · asked by bunky 2

Linear equation

2006-07-23 12:29:10 · 11 answers · asked by joinerd@sbcglobal.net 1

Maynards footwear sells ladies shoes at 800 ba pair fixed costs are 120,000 and valuable costs amount to 50% of the totlal value
a)setup the revenue,fixed costs and total costs function

2006-07-23 12:24:46 · 3 answers · asked by gen 2

2006-07-23 12:19:47 · 18 answers · asked by magan p 1

2006-07-23 12:01:37 · 9 answers · asked by redskin8923 1

2006-07-23 11:41:05 · 5 answers · asked by redskin8923 1

Don't tell me a2= b2 +c2. The famous Pytagoras' formulae, because it isn't Maths ,, it's Geometry.
They say the reason is that it's imposibly to multiply with Roman numbers, but I'm not sure.

2006-07-23 11:10:00 · 6 answers · asked by Susana C 3

2006-07-23 10:15:38 · 8 answers · asked by joinerd@sbcglobal.net 1

I know integration by parts, that's not what I'm interested in. Risch is a very advanced integration algorithm that I'm trying to get to grips with.

2006-07-23 08:56:01 · 2 answers · asked by Donovan L 1

2006-07-23 08:52:49 · 2 answers · asked by yonas_2 1

An equivalence relation is a binary relation which satisfies the properties:

1) a~a (reflexivity)
2) if a~b then b~a (symmetry)
3) if a~b and b~c then a~c (transitivity)

Find the error in the following argument:
The reflexive property is redundant in the axioms for an equivalent relation. If x~y, then y~x by the symmetry property. Using the transitive property, we can deduce that x~x.

Can you find another axiom to replace axiom 1 such that the other two axioms do imply the new axiom 1?

2006-07-23 08:40:43 · 6 answers · asked by Math_Guru 2

2006-07-23 08:36:44 · 7 answers · asked by superhomer1221 2

I have always wondered what happened to the other dollar!!
Three men rented a room on a business trip. They were charged $30.00 for the room. Each man paid $10.00. The clerk started feeling guilty about overcharging the gentlemen. So he called the bellboy and gave him $5.00 to give back to the men. The bellboy wondered how on earth he was going to divide $5.00 between three men. So he took $2.00 and gave $1.00 back to each man. Out of there pocket, how much did each man pay for the room? Answer is $9.00. 9 times 3=27 plus the 2 dollors the bellboy put in his pocket makes $29.00. Where on earth is the other dollar......??????????????? TALK TO ME TALK TO ME!!!!!

2006-07-23 08:31:39 · 13 answers · asked by whenwhalesfly 5

2006-07-23 08:16:27 · 2 answers · asked by sweets 1

2006-07-23 07:12:43 · 21 answers · asked by Ejsenstejn 2

2006-07-23 07:10:04 · 6 answers · asked by Ejsenstejn 2

Line 1 in perpendicular to the graph of the equation -3x-5y=2 and has points (2,-6). Find the equation for 1.

2006-07-23 06:26:38 · 8 answers · asked by Anonymous

2006-07-23 05:55:51 · 20 answers · asked by Anonymous

2006-07-23 05:04:08 · 13 answers · asked by LtTuvok1701 2