Mathematics - 22 December 2007

whats 1+1.im really confused with this difficult problem

2007-12-22 03:37:37 · 12 answers · asked by Anonymous

2007-12-22 03:29:34 · 7 answers · asked by Anonymous

2007-12-22 03:22:21 · 11 answers · asked by DNicolasL 2

2007-12-22 03:14:52 · 13 answers · asked by DNicolasL 2

2007-12-22 03:10:18 · 20 answers · asked by Anonymous

I am learning this and I JUST DON"T GET IT! The sooner the answers the better!
Solve. Write in simplest form.
1. g ÷ 3 4

9
= 1 23

31


2. 3

6
÷ s = 5

2



3. 2 1

2
÷ x = 55

194


4. 9 n = 36


5. 3

4
z = 9

20


6. 4r

7
= 2

7



7. d ÷ 4

8
= 5

6


8. 7 1

5
j = 36


9. 7

9
÷ e = 77

81


10. 1 2

3
÷ v = 10

47



11. 9 1

2
÷ b = 1 32

63


12. 6

8
÷ c = 9

8



13. 8 ÷ q = 1 35

53


14. f ÷ 2

5
= 15

7



15. 7

10
w = 7

40


16. 5 2

3
t = 17

2007-12-22 03:05:32 · 8 answers · asked by ~Ash Bear~ 2

If I get the paper I am working on published, I'll have an Erdos number of 4.

2007-12-22 03:02:55 · 7 answers · asked by Amy W 6

The determinant of the matrix

1-c^2 , 2-c
1+c ,1

(a) 1 – c
(b) –1– c
(c) c – 1
(d) c + 1

2007-12-22 02:24:04 · 6 answers · asked by ABD A 1

I want to make sure I'll be okay to carry my nasal allergy spray on board with me - the bottle says net filled weight 16 g. Thanks!

2007-12-22 02:11:37 · 6 answers · asked by Kylie 3

Given that the points A and B have coordinates (7, 4, 4) & (2, -2, -1) respectively, use a vector method to find the value of cos AOB, where O is the origin.
Prove that the area of ∆AOB is 5√29/2.

I’ve done 1st portion of this problem. But in second portion, how can I calculate the area of ∆AOB?

2007-12-22 02:09:18 · 5 answers · asked by geton 1

7 - [13 - {-2 - 6 (6 of -5)}] = _________

2007-12-22 02:08:48 · 14 answers · asked by Mohit T 2

Use Descartes's Rule of Signs and the Rational Zeros Theorem to find all the real zeros of each polynomial function.
Use the zeros to factor f over the real numbers.

(1) f(x) = 4x^4 + 15x^2 - 4

(2) f(x) = x^4 - x^3 - 6x^2 + 4x + 8

2007-12-22 02:08:36 · 3 answers · asked by journey 1

Santa stands at x = 0 in an infinitely long and narrow corridor (defined by the x-axis). Initially the corridor is devoid of any stink particles. At time t = 0, Santa unleashes a stink bomb (ah political correctness) which releases N stink particles at x = 0. The particles move through the corridor by diffusion only.

Little Timmy’s nose is sensitive enough to smell anything as long as its CONCENTRATION is greater than C. Concentration is defined as the number of particles per unit x distance along the corridor. In terms of N and C, how far away should Timmy stand in order to never smell Santa’s stink bomb?
---


FYI: mathematically, diffusion is governed by the following partial differential equation:
∂u/∂t = D* ∂²u/∂x²
-∞ < x < ∞, t > 0
where u = concentration of particles (units: particles / distance)
and D = diffusivity of the particles in the air (units: distance² / time)

10 points for the best answer, plus a load of thumbs ups. Ha ha, load.

2007-12-22 00:08:31 · 9 answers · asked by Dr D 7