Mathematics - 6 September 2007

2007-09-06 23:59:49 · 10 answers · asked by Anonymous

A ladder 10m long is made to rest against a wall. Its lower end touches the ground at a distance of 6m from the wall.At what height above the ground the upper end of the ladder rests against a wall?

2007-09-06 23:51:48 · 8 answers · asked by AhsanAbdul Rehman R 1

cards are possible in this game??

how to do this?

2007-09-06 23:35:17 · 5 answers · asked by jgksgkjfka 3

2007-09-06 23:21:56 · 8 answers · asked by Michael Ray G 1

cards are possible in this game??
errr factorials and counting. i forget how to do this! help please!

2007-09-06 23:20:41 · 2 answers · asked by jgksgkjfka 3

Find an expression in terms of n, for the nth term of the sequence 17, 14, 11, 8, 5, ...


The answer is 20 - 3n

But I do not understand why the answer is that so could anyone explain it to me? Thanks a lot!

2007-09-06 23:04:53 · 4 answers · asked by ♪£yricảl♪ 4

Find the X intercept:

(x^2 + 3x ) / (3x + 1) ^2

please show your steps because somewhere I'm messing up and getting the wrong answer. My Ti says the X intercept is -3.

2007-09-06 21:28:15 · 3 answers · asked by Matthew K 2

I thinks they R

2007-09-06 21:23:56 · 5 answers · asked by Anonymous

2007-09-06 21:18:06 · 14 answers · asked by Anonymous

And also if I buy a meal that cost $19.99 & I get 70% off, how much do I pay?

Can you teach me on math & basics? Thank you for your kindness!!! :)

2007-09-06 21:17:45 · 9 answers · asked by Anonymous

2007-09-06 21:05:56 · 6 answers · asked by paulinatran10 1

Please help me figure out how to solve this. I already have the answer (-1/2), I just need assistance on what steps to take.

Limit [(1 / ( t * sqrt(1+t))) - (1 / t)]
t-> 0

2007-09-06 21:02:57 · 4 answers · asked by Smoke[MaxX] 2

The following is a problem I have to program for MATLAB; my math skills are not the best though, so I would appreciate any help:)
A box has the dimensions of 5 inches x 4 inches x 6 inches
I must: compute the length of the diagonal from one corner to the far corner of the box. Also, if you know what this is called, it might help because there is possibly a program in MATLAB that already does this function.... Thanks in advance!

2007-09-06 20:36:30 · 4 answers · asked by vwmanxter 2

These are some questions from my study guide. I have the answers, but I don't understand it. =(

The Securities and Exchange Commission has determined that the number of companies listed in NYSE declaring bankruptcy is approximately a Poisson distribution with a mean of 2.6 per month.

26. Find the probability that more than 1 bankruptcy occur next month.
A) .1931
B) .9257
C) .7326
D) .4816
E) .2674

Answer: C

27. Find the probability that no more than 1 bankruptcy occur next month.
A) .1931
B) .9257
C) .7326
D) .4816
E) .2674

Answer: E

2007-09-06 20:05:10 · 3 answers · asked by traysizzle 1

A business woman is preparing an itinerary for a vist to six major cities

a) How many different itineraries are possible?
which is easy, 6!

b) If the businesswoman randomly selects one of the possible itineraries and Denver and San Francisco are two of the cities that she plans to visit, what is the probability that she will Denver before San Francisco.

I have the answer, I just did [(5! x 1) + (4 x 4!) + (12 x 3!) + (24 x 2!) + (4!)] / 6!

Now my question is, is there a more elegant way to extract the same answer?

2007-09-06 20:00:38 · 3 answers · asked by alextseng4 2

Hi, I just started statistics and I would really appreciate some help with this practice problem.

Some information from 20 students was gathered about a workshop.
One of the items listed says 'Duration: 6 weeks'.
Would this be quantitative or qualitative data?
If it is quantitative, then would it be discrete or continuous?
Thanks so much.

2007-09-06 19:56:07 · 2 answers · asked by tomorrowat10 2

so far ive gotten it to lim as x--> 0 xsinx / ((1-cosx)(cosx))

where do i go from here? thanks for your help!

2007-09-06 19:55:34 · 3 answers · asked by apple w 1

X-2=X+2/4 +5


Its been 4 years since highschool and college math is reminding me of how much I have forgotten. How would i work through this problem? I need the steps rather than the answer.

2007-09-06 19:52:50 · 8 answers · asked by mystraven85 4

I'm not talking about a spiritual afterlife at all ...I do not believe in any such thing


I mean something about probabilities over infinity ...or time reversing ....anything ...any possibility that you can think of....

or immortality ...something???

2007-09-06 19:49:14 · 9 answers · asked by Anonymous

i need the step by step method for working through an equation like this please. Thank you for your time!

2(4-X)-(3X+2)=7+4(X-7)

2007-09-06 19:38:59 · 14 answers · asked by mystraven85 4

1) Find the constant c that makes g continuous on (-infinity, infinity)
g(x) = {x^2-c^2 if x<4
{cx+20 if x>(less than or equal to)4
I got: by plugging in 4 into both equations
x^2-c^2=4^2-c^2=16-c^2 & cx+20=c(4)+20=4c+20
then combining them together: 4c+20=16-c^2
4c+4=-c^2
c^2+4c+4=0
(c+2)(c+2)=0
c+2=0
c+2=0
c=-2 & c=-2

2) Use the intermediate value theorem to prove that there is a positive number c such that c^2=2. (This proves the existence of the number sqrt[2])
c^2 is a polynomial & continuous function on its domain & its domain is from (-infinity, infinity)
It's an open interval so I took a closed interval of [1,2] from that open interval.
f(1)=1 & f(2)=4 so N=2 so there exists a number c in (1,2) such that f(c)=2

2007-09-06 19:38:14 · 3 answers · asked by Anonymous

here is what it says..

<1 and <2 are complimantary angles. Find the measures of the angles when m<1 = (x-10) degrees and m<2 = (2x + 10)degrees.

Are the two angles equal? I am so confused. What's the answer?

2007-09-06 19:30:59 · 5 answers · asked by courtney j 1

2007-09-06 19:19:08 · 11 answers · asked by Sea Legs 4

apply the distributive property

1. 4(10 - 3x)
2. (16 + 3t)t
3. (4s + 3)(-5)
4. -13(1 - x)
5. (6x + 9)x

2007-09-06 19:11:55 · 32 answers · asked by Anonymous

2007-09-06 19:07:57 · 2 answers · asked by Anonymous

I'm in high school, but I still can't pass Pre Algebra. I got a worksheet today, but I don't understand it. No, I'm not asking you to do my homework, I'm just asking for help.
The worksheet says:
For this task you will use deductive reasoning to determine which of the digits from 0 to 9 each of the letters represents. Each of the digits from 0 to 9 is used exactly once.

1. g + g + g = d

2. j + e = j

3. g times g= d

4. b + g = d

5. f - b = c

6. a x c = a

I kind of understand the instuctions, from what I understand you have to figure out what the letters are and what number they are. But I can't figure out how to do it. =[

Thanks in advance.

2007-09-06 18:53:43 · 8 answers · asked by Anonymous

I need some help figuring out how to work this math problem. Id appreciate it if you could show all the steps please.
Not sure how to type it in so it is understandable so bear with me. its negative 4x minus 2x over 3, plus 7x.

-4x - 2x
---------- +7x
3

2007-09-06 18:44:07 · 4 answers · asked by mystraven85 4

Solve the system?

|x+2y-2z=-1|
|x+3y+z=10|
|2x+6y+2z=20|

2007-09-06 18:41:43 · 4 answers · asked by Anonymous

S=2πrh for r.

2007-09-06 18:27:23 · 3 answers · asked by Anonymous

2007-09-06 18:16:54 · 5 answers · asked by jennifer f 1