Mathematics - 10 November 2007

Two ships, the Algoa and the aTitanium are preparing to leave harbor. The Algoa leaves the harbor 15 minutes before the Titanium. The Algoa travels at 24km/h and the titanium at 28km/h. After how many hours will the two ships meet???????

2007-11-10 23:21:18 · 8 answers · asked by Krypton 3

2007-11-10 22:20:01 · 6 answers · asked by Anonymous

Please give me a problem that is difficult for even you. And don't write the solution, I will try to figure it out even if it takes me to my death bed.

2007-11-10 21:54:34 · 8 answers · asked by Insanely Curious 1

2007-11-10 21:35:23 · 5 answers · asked by Anonymous

Right now I can't even solve x+y

2007-11-10 21:22:10 · 4 answers · asked by Insanely Curious 1

2007-11-10 20:26:30 · 2 answers · asked by Anonymous

i need answers:(
it due 2mrow..

2007-11-10 20:23:38 · 3 answers · asked by Anonymous

A solid sphere of radius 40.0 cm has a total positive charge of 32.0 µC uniformly distributed throughout its volume. Calculate the magnitude of the electric field at the following distances from the center of the sphere.
(a) 0 cm (b) 10.0 cm (c) 40.0 cm (d) 60.0 cm
units are in kN/C

i've tried to use the formula E=ke(Q)/(r2) but seems like not the right formula. anything will be helpful! thanks

2007-11-10 20:18:58 · 1 answers · asked by ann 2

Which integer primes are also primes in the Gaussian Integers?

I'll be quite impressed if somebody who hasn't seen this question before works out not just the correct answer, but a solid proof for it as well.

2007-11-10 19:34:08 · 3 answers · asked by Curt Monash 7

2007-11-10 19:33:13 · 3 answers · asked by shokraneh m 1

We define an interesting number to be a number that has at least one interesting property.

Prove that all natural numbers are interesting.

2007-11-10 19:26:18 · 4 answers · asked by Curt Monash 7

43,252,003,274,489,856,000=?

2007-11-10 19:07:26 · 12 answers · asked by sundeep 9732 1

I have forgotten how to find dy/dx and d2y/dx2 of the function.

2007-11-10 18:53:24 · 4 answers · asked by Anonymous

Ok, long story short, I'm in college and I can't seem to get past math 030, which is equivalent to the SECOND year of high school algebra (taken usually about your Junior year). I've always had issues with math since I was a kid.

I was wondering, how hard is a Statistics math class? Would this be a good alternative?

2007-11-10 18:43:15 · 9 answers · asked by Anonymous

if g(x)= x^2-1 then g(x-1)-g(x+1)=?

2007-11-10 18:38:52 · 9 answers · asked by Anonymous

251*3.00,000*60*60*24*365=?

2007-11-10 18:23:08 · 2 answers · asked by sundeep 9732 1

According to a simple physiological model, an athletic adult needs 20 calories per day per pound of body weight to maintain his weight. If he consumes more or fewer calories than those required to maintain his weight, his weight changes at a rate proportional to the difference between the number of calories consumed and the number needed to maintain his current weight. The constant of proportionality is 1/3500 pounds per calorie.

(a) Suppose a person has a constant caloric intake of 3000 calories per day. Write a differential equation for W(t).

dW/dt = ?

(b) What is the equilibrium solution?

= ? pounds

(c) If a person initially weighs 160 pounds, what will happen to their weight if their constant caloric intake is 3000 calories per day?
Increase?
Remain constant?
Decrease?

2007-11-10 18:16:52 · 3 answers · asked by liouchan 1

1)the perimeter of a rectangle is 44 inches and its area is 112 square inches. find the length and the width of the rectangle.

2)it takes terry 2 hours longer to do a certain job than it takes tom. they work together for 3 hours: then tom left and terry finished the job in 1 hour. how long would it take each of them to do the job alone.

2007-11-10 17:53:47 · 7 answers · asked by Anonymous

this is my school project and i am a bit confuse so can anyone explain?

2007-11-10 16:12:31 · 1 answers · asked by jansea 2

Can someone draw this up with a scale ruler and then do the rectangles or do the square meters in the profile of the scaled area? The first is 13.5 by 6.5 by 9.1m, then the second is 10 by 8.1 by 10.6 by 5.4 by 17.1 by 3.4. Sorry the first question I did put in the same numbers but in a different order. Yes it is an irregular shape of a garden area I'd like the area worked out to get the exact area to by the right amount of weed matt.

2007-11-10 16:08:35 · 2 answers · asked by MACDOG 1

Now, Scott wants to be competitive with his pricing, so he wants to use mathematical modeling to figure out his costs, revenues and profits.



4. Scott bought the ice cream stand building for $2,000.00 and he will spend an extra $200 on the plywood ice cream cone design from Part II.

The monthly rent for the space his building is on is $150.

a. Write a linear equation giving the total cost C of operating the ice cream stand for n months.

b. Assuming that Scott can bring in $350 per month, write the equation for the revenue R derived from n months of operation.

c. What is the formula for Scott’s profit from n months of operation?

d. At what point does Scott break even?

2007-11-10 15:51:22 · 4 answers · asked by investing1987 3

As soon as an army 1 mile long begins to march, a courier leaves the rear of the army for the front. The courier reaches the front and immediately turns back for the rear; the courier reaches the rear after the army has traveled 1 mile. How far did the courier travel?

2007-11-10 15:35:15 · 20 answers · asked by Anonymous

2007-11-10 15:33:26 · 6 answers · asked by Anonymous

he's just started learning binary, and i never remember doing it in math at school so im finding it hard to help him.

could somebody please post up a simple post on how to do binary. it would be very helpful. (he's 14)

Thank you.

2007-11-10 15:24:54 · 4 answers · asked by Jordan G 1

2007-11-10 14:35:34 · 5 answers · asked by Anonymous

i think..the answer is 2..can someone confirm for me

2007-11-10 14:31:08 · 3 answers · asked by Anonymous

2007-11-10 12:33:37 · 13 answers · asked by tabitha2818 2

2007-11-10 12:32:39 · 22 answers · asked by jlmeritt 1

I have a set of q's on this... once I know the method for one I'll be able to do them all but currently I don't get it. Help greatly appreciated.

Write (1+23i)e^23*pi*i in the form x + iy with x, y real numbers.

2007-11-10 12:24:36 · 5 answers · asked by ndavos 2

2007-11-10 12:16:07 · 5 answers · asked by adan a 1