Mathematics - 9 December 2007

and also can you tell me how you did it?

2007-12-09 23:58:30 · 12 answers · asked by Dillon 1

I need to know ASAP (very important) how much percentage the number 12 is to the number 72. Well I don't care for the answer, just the formula so I can apply the percentage for the numbers 12, 14, 11, 5, etc. to 72 or any number for that matter. I need this quick like in a couple minutes!

2007-12-09 23:57:37 · 5 answers · asked by Mike D 3

2007-12-09 23:22:22 · 2 answers · asked by You Know Who Must Not Be Named 3

2007-12-09 22:25:34 · 7 answers · asked by Flamezz 5

i really need help! dont worry this isnt homework or anything..

2007-12-09 22:08:16 · 8 answers · asked by Anonymous

2007-12-09 21:50:31 · 2 answers · asked by Anonymous

2007-12-09 21:40:59 · 13 answers · asked by Christopher 2

2007-12-09 21:34:19 · 17 answers · asked by Anonymous

I *need* to figure this baby out, and I'm not having much luck...can you guys walk me through it in as much detail as you can muster? I can really, really use it! Here it is:

"A plane is capable of flying at a speed of 180 km/hr in still air. The pilot takes off from an airfield and heads due north according to the plane's compass. After 30 minutes of flight time, the pilot notices that, due to the wind, the plane has actually traveled 80km at an angle 5 degrees east of north.
a) What is the wind velocity?
b) In what direction should the pilot have headed to reach the intended destination?"

2007-12-09 21:22:55 · 4 answers · asked by netsurfer733 2

2007-12-09 21:07:18 · 4 answers · asked by tobi 1

Let S and T be (not necessarily disjoint) subsets of a finite group G. Prove that either G = ST or |G| >= |S| + |T|.

I just can't get a grip on where to start with that problem.

2007-12-09 19:38:22 · 1 answers · asked by Curt Monash 7

2007-12-09 19:33:45 · 5 answers · asked by lovelystarr_86dl 1

1. Prove that Im(xy) = Re(x) + Im(x)Re(y)
for x = a + bi, y = c + di, i = imaginary

2. If z + 1/z is real, prove that either Im(z) = 0 or |z| = 1
for z = x + yi

2007-12-09 19:08:22 · 1 answers · asked by daNCeGurU 2

(7-3i)(3+i)

2007-12-09 18:55:19 · 7 answers · asked by *TiNK* 3

hello. can you please explain how to graph rational functions. i'm really confused and i have equations like f(x)= x^3+1/x^2-4. and (x+2)(x-1)/(x-3)

2007-12-09 18:53:57 · 1 answers · asked by shelykid 2

2007-12-09 18:47:32 · 6 answers · asked by gr8ventura 1

2007-12-09 18:44:19 · 4 answers · asked by gr8ventura 1

Suppose you buy 100 pounds of cucumbers and they are 99% water. After a few days, they dry out to 98% water. How much do the cucumbers weigh now?

2007-12-09 18:43:29 · 4 answers · asked by Ray S 1

it`s 8 right?

2007-12-09 18:40:19 · 8 answers · asked by RAWRRR.it`s CASEY.♥ 4

2007-12-09 18:28:25 · 6 answers · asked by glamour girl 1

probability that

peter wins exactly 4 of the games

Paul wins more games than Peter


So how do I incorporate the binomial distribution into this?

2007-12-09 18:27:22 · 2 answers · asked by Maria C 1

2007-12-09 18:19:45 · 4 answers · asked by Mel 1

2007-12-09 18:04:49 · 11 answers · asked by shakelia 1

2007-12-09 17:54:50 · 11 answers · asked by shakelia 1

solve the equation 6^(4x-3) = 36^(x+1)

2007-12-09 17:54:29 · 6 answers · asked by Anonymous

Find the point or points on the graph of y = sqrt(3x + 40) with
-10<=x<=10 that is/are closest to the origin.

2007-12-09 17:46:28 · 2 answers · asked by Hellos 1

2007-12-09 17:29:46 · 4 answers · asked by shakelia 1

find the center and radius of the circle whose equation is x^2+y^2-8x+2y+8=0

and how do you find it?

2007-12-09 17:24:42 · 4 answers · asked by surf22n30skate 1

Of all the flashlights in a large shipment, 15 % have a defective bulb, 15 % have a defective battery, and 5 % have both defects. If you purchase one of the flashights in this shipment, find the probability that it has the following:

a. a defective bulb or a defective battery

b. a good bulb or a good battery

c. a good bulb and a good battery

2007-12-09 17:24:27 · 2 answers · asked by Anonymous

We roll a pair of dice. If the sum of the dice is 7, you pay me $31. If the sum is not 7, I pay you the number of dollars indicated by the sum of the dice. What is the price that you should pay to play the game that would make the game fair?

a. $2.24 b. $0.67 c. $4.11 d. -$1.63

2007-12-09 17:24:00 · 6 answers · asked by Chris 1