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Mathematics - 17 November 2007

[Selected]: All categories Science & Mathematics Mathematics

And how far ago was that?

2007-11-17 06:44:23 · 9 answers · asked by Anonymous

My answer: T, assuming f'(c) exists. At the extreme point in f the slope is equal to 0, leaving the slop of the tangent line (f'(c)) = 0.

Correct?

2007-11-17 06:34:03 · 1 answers · asked by John Avry 2

1

Someone I know claims to be able to predict the outcome of a coin toss thought not perfectly.. I know they basically have a 50% chance of guessing it right the first time...but how many times would they need to guess it right for it somewhat confirm that they can somehow predict the outcome. Like for example, would they need to guess it right 90% of the time or something like that. And what would be the odds of them guessing say 70% right? I would kind of like to be able to setup some sort of a bell curve to know what values would be out of the normal range for deviation? Thanks

2007-11-17 06:32:50 · 3 answers · asked by Anonymous

2007-11-17 06:06:17 · 5 answers · asked by michael s 1

3

A certain colony of bacteria grows at a rate proportional to the number of bacteria present. Suppose the number of bacteria doubles every 12 hours. How long (in hours) will it take this colony to grow to five times its original size?

Time needed = _________ hours

PS
the answer is NOT 27
and is NOT 30 :]

2007-11-17 05:59:59 · 4 answers · asked by ohsnapps 2

(x-2)^2=3

2007-11-17 05:55:28 · 8 answers · asked by Katherine G 1

Assume that we know sigma (1/r!)from r=0 to infinity converges to e. Then how would we show that e - sigma(1/r!)from r=0 to n < 1/(n(n!))?

From this, can we deduce that e is irrational?

2007-11-17 05:29:48 · 2 answers · asked by Anonymous

Solve for x if the area of the following rectangle is 20 and the perimeter is 18.


I dont get it...

2007-11-17 05:28:10 · 8 answers · asked by kykygoo 3

Give examples of the non-rectangular please :)

2007-11-17 05:02:29 · 3 answers · asked by Anonymous

i am confused can someone help me

2007-11-17 04:55:30 · 13 answers · asked by arod9802 2

0

2007-11-17 04:24:46 · 13 answers · asked by diva 1

2007-11-17 04:04:19 · 14 answers · asked by lilliam r 1

find a formula for the change in populaetion (P't)
if P(t) is

p(t) = 40(3/2)^t/3

thanx!!!

the answer is:
P'(t) = 40/3 * ln3/2 * (3/2)^t/3

tnanx!!!

2007-11-17 03:44:31 · 4 answers · asked by Anonymous

I've been struggling with this problem for a while and can't find a solution.

Let M2n be the set {1, 2, 3, ..., 2n}

n+1 integers from the set are chosen.

Show that at least two of the numbers satisfy a|b; meaning a is a divisor of b.

2007-11-17 03:42:16 · 1 answers · asked by tom 5

This one is called the "Traveler's Dilemma"

You and another passenger lose identical souvenirs on an airline. The manager cuts you a deal - you can both write a dollar amount on a piece of paper, between 2 and 100. If you both write the same amount, you both get that amount. However, if one person writes y and the other writes x, and y < x, then the person who wrote y gets y + 2, and the person who wrote x gets y - 2.

What moves will players rationally play?

2007-11-17 03:31:12 · 3 answers · asked by Steve B 1

what are the mystery numbers??
we are twin primes.
we are greater than 100 and less than 200.
the product of the sum of the digits of the first number times the sum of the digits of the second number is 80.
NOTE:twin primes are pairs of prime numbers that have a difference of two.
thx for the help....
correct answer gets 10 points!!

2007-11-17 03:20:56 · 3 answers · asked by My name=patience 3

If someone was born on, 2 / 13 / 1931
and died on 9 / 25 / 2006.
How many years, months, and days were they on earth?
tell me how you came upon yor answer. Thank you

2007-11-17 03:20:15 · 4 answers · asked by benejueves 6

Graph using x and y intercept 8x-2y=16.

2007-11-17 03:04:22 · 6 answers · asked by Santara 1

I took magic mushrooms before my math test and I scored 15% higher (from 83% to 98%). Should I continue to do this to get good scores? Thanks.

2007-11-17 02:59:47 · 6 answers · asked by Axis Flip 3

a test of abstract reasoning is given to a random sample of students before and after they completed a formal logic course. The results are below. Construct a 95% confidence interval for the mean difference between the before and after scores. Is there evidence to suggest the logic course improves abstract reasoning? You may assume that the differences for the dependant samples are normally distributed.
before 74 83 75 88 84 63 93 84 91 77
after; 73 77 70 77 74 67 95 83 84 75

Note; define d= before -after, then d = 3.7 and s = 4.95

2007-11-17 02:39:22 · 1 answers · asked by Eugene D 1

whats 16+j<-21
2n-11>11
8.2b+3>27.6

2007-11-17 02:33:06 · 9 answers · asked by Anonymous

is there any formula to calculate the sum?

2007-11-17 02:32:48 · 4 answers · asked by Anonymous

2007-11-17 02:30:57 · 12 answers · asked by Anonymous

2007-11-17 02:23:27 · 8 answers · asked by chris n 7

0

Show your work.

2007-11-17 01:54:39 · 13 answers · asked by Anonymous

I bought a turkey , its about 10 lbs, but I want to brine it in about 2 gallons of water. I have a plastic container that holds 28 lbs, of what used to be laundry detergent. As I was thinking is that container going to hold that much volume, I guess I am wondering, with the turkey and the liquid? Or should I get something bigger in size? If that is the case, what gallon size should I get?

2007-11-17 01:33:17 · 4 answers · asked by krennao 7

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