Mathematics - 25 June 2007

Thats .9999999 recurring. Does it equal 1?

2007-06-25 23:56:21 · 32 answers · asked by jon o 2

1) find the 8th in the following number patterns: 2,-4,8,-16,32......?
2) complete: the exterior angle is equal to........
thankyou

2007-06-25 23:36:23 · 9 answers · asked by jess y 4

Can YOU prove that 5 is equal to 2?

Hint: Use mod.

2007-06-25 22:55:29 · 9 answers · asked by βread⊆ℜumbs™ 5

Hi.
I have the following problems that I keep doing wrong for some reason. Can someone please walk me through the solutions step by step?
1) Sum of 2j^2 where the first term is 1 and last 4. The answer is 60 but I keep getting 68. The formula I use is n/2 (a1 + an)
2) Sum of 1/k where the first term is 3 and last is 6.
Please walk me through this step by step so I can see where I went wrong.
Thank you.

2007-06-25 22:54:57 · 3 answers · asked by F 6

Can someone please tell me one person who has ever benefited from knowing calculus during an emergency, and what were the circumstances?

2007-06-25 22:46:30 · 9 answers · asked by Anonymous

What exactly does mod stand for in calculus?
What about cosine, etc.

I mean actually written out if you had to use them by hand.

2007-06-25 22:41:50 · 3 answers · asked by βread⊆ℜumbs™ 5

what kind of maths is this? is this polynomials?

if x + y = 5, xy = 1 and x > y, then (square root of x + square root of y) / square root of x - square root of y) = ?

2007-06-25 21:56:22 · 11 answers · asked by quennie 1

2007-06-25 21:33:52 · 8 answers · asked by Anonymous

[Reasking, due to poor response. Doesn't anyone care about this? It shouldn't be too hard to get right.]

Searching for symbols within Yahoo!Answers is inconsistent,
here is what you get if you search on various symbols
(some are Alt-codes and some are HTML characters):

Most alt-codes e.g. integral (∫), square-root(√), infinity (∞), (≈) => these all match the word 'and' - useless!?

squared (²) => also matches '2', which makes it useless

Greek letters:
capital Sigma (Σ) => returns both Σ and lower σ , which is meaningless in science (instead of if you were searching for Greek-language, in which case it would be correct).
Similarly θ => θ,Θ
α,β,λ,µ...

Anyone find anything else inconsistent, weird or quirky with any other symbols?

Maybe if we kick up a fuss they might fix this... please contribute...

[Note: if you post an URL in reply, put it in the 'Sources' box]

2007-06-25 21:27:59 · 3 answers · asked by smci 7

Find (f o g)(x) and its domain, (g o f)(x) and its domain, (f o g)(-2) and (g o f)(-2) of the following problem:
1.f(x) = 2x + 3, g(x) = 3x -1
2.f(x) = x+ 2, g(x) = 2x2
3.f(x) = x2 – 1, g(x) = x + 1

2007-06-25 21:21:25 · 2 answers · asked by Kauori 1

2007-06-25 20:17:07 · 2 answers · asked by Anonymous

What is the Integral of

1/ ( (x-2)^(3/2) ) from 0 to 4.


Thanks!

2007-06-25 20:08:53 · 3 answers · asked by Anonymous

Town B is 50 miles north of Town A. Town C is exactly 75 miles southeast of Town A. How far is Town B from Town C?

2007-06-25 18:51:07 · 8 answers · asked by Anonymous

I need help finding the degree of these polynomials, please..

5xcubedy^ - 6xcubedycubed

5ysixth + yfourth - 2y^ - 8

3
_______________________

I hope u can understand that lol...i really do.
^ = squared

2007-06-25 18:09:45 · 3 answers · asked by jaz 5

There should be two answers, I solved it and think they are: x= -4/5 and 2.

2007-06-25 17:53:06 · 9 answers · asked by Anonymous

find the derivative:
F(x)= 2x^3-1/x^2

2007-06-25 17:50:42 · 3 answers · asked by angel 1

2007-06-25 17:49:39 · 4 answers · asked by Rave N 1

Obviously as we learned in grade school, Isosceles triangles have 2 equal sides
an equilateral triangle has all 3 equal sides, my question is
are isosceles triangles also equilateral triangles (meaning 2 side triangle also name for 3 side triangle) , or is an equilateral triangle also an isosceles triangle (a 3 side triangle is also a two side triangle?) i think i totally confused my self, a two side triangle is also a 3 side triangle or a 3 side triangle is all a 2 side triangle.
P.S. Or is an isosceles triangle a triangle of AT LEAST 2 sides?
I hope you understand what I'm taking about i know but yet ive totally confused my self, oh man i totally confused myself lol

2007-06-25 17:30:26 · 4 answers · asked by Anonymous

3x^2-33=0

I think the answers are: sqrt11 and -sqrt11. Am I right? Could you also explain how you got your answer?

2007-06-25 17:24:24 · 4 answers · asked by Anonymous

Use the sales forecaster's prediction to describe a normal probability distribution that can be used to approximate the demand distribution. Sketch the distribution and how its mean and standard deviation.

Provided information: Sales forecaser predicts an expected demand of 20,000 units with a 0.90 probability that demand would be between 10,000 units and 30,000 units.

What is the standard deviation?

2007-06-25 17:22:15 · 6 answers · asked by toni.chang 1

Please see this layman's pic, since trying to write it here is a hellish ordeal: http://img98.imageshack.us/img98/4360/reimennrl7.jpg

The first part is the actual problem. The second part, why is the problem split into two sums? Is it because the k below sigma in the first problem is = 3, and we have to set it to 1? I don't see the relationship, thanks!

2007-06-25 17:15:49 · 4 answers · asked by Jorm 3

Susan invested part of her $18,000 bonus in a fund that paid 9% profit and invested the rest in stock that suffered a 3% loss. Find the amount of each investment if her overall net profit was $780.

I need to find:
*amount invested at 9% = $________
*amount invested in stock = $_______



Thanks for your help!

2007-06-25 17:10:41 · 6 answers · asked by DoWHATiDO 3

1) (x + 2y + 2z)sqare
2) (2x + 3y - 4z + 3w)square
3) (xsquare - 2x + 3)square
4) (2x + 3yz + w)sqare
5) (x + y - 3z)square
6) (x + y)to the 4th

please do include your solutions, I would really appreciate the helps. T_T

2007-06-25 16:57:14 · 6 answers · asked by MarkAngelo 2

pls help me pls... give me the best explanation pls

2007-06-25 16:44:43 · 5 answers · asked by Yer 1

2007-06-25 16:44:29 · 7 answers · asked by mike s 2

The bearing of a lighthouse from a ship was found to be N 37 degrees E. After the ship sailed 2.5 miles due south, the new bearing was N 25 degrees E. Find the distance between the ship and the lighthouse at each location.

2007-06-25 16:40:09 · 4 answers · asked by daniel 1

Differentiate e^sin x sin e^x with respect to x

2007-06-25 16:32:45 · 5 answers · asked by wake-up-call 2

13 pounds = how many ounces??

2007-06-25 16:05:33 · 4 answers · asked by LuLuGirL<3 2

1. Evaluate. (8 – 3) (12 ÷ 2 • 2) – 20

2. Convert 0.45 to a fraction and write the result in lowest terms.

3. Convert 0.45 to a fraction and write the result in lowest terms.

4. Solve. 6x – 7 = 5(x – 2)

5. The length of one of the equal legs of an isosceles triangle is 3 inches more than 2 times the length of the base. If the perimeter is 31 in, find the length of one of the equal legs.

6. Solve. 2x - 8 = 12

7. Is -8 a solution to the equation 12 – x = 4?

8. Is 10 a solution to the equation 2x - 9 = 11?

9. Solve for y. 3x – 2y = 12

10. Solve. –3(x – 3) + 8(x – 3) = x – 9


Thanks in advance

2007-06-25 15:47:32 · 5 answers · asked by mike s 2

A company claims a medication is 92% effective in relieving pain. If 10 ppl who suffer from pain are randomly selected and given the med, and assuming the claim is correct, find the probability that:
a. at least 8 will be relieved of pain
b. exactly 2 of them will not be relieved of their pain

2007-06-25 15:40:01 · 3 answers · asked by sara p 1