Mathematics (Science & Mathematics) - 29 July 2007

help me evaluate this. this is the only one I haven't answered

4) lim (sqrt1+sqrtx)/(sqrt1+x)
x-->+infinity
Note:
the numerator is a single term also the denominator

2007-07-29 19:15:14 · 4 answers · asked by Patricia 2

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math - permutations Please help!?

how many diagonals are there in
a) a quadrilateral?
b) a pentagon?
c) a hexagon

2007-07-29 18:47:53 · 3 answers · asked by Anonymous

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You buy 1 ticket for $1 out of a lottery of 1000 tickets where the prize for the one winning ticket is to be $

You buy 1 ticket for $1 out of a lottery of 1000 tickets where the prize for the one winning ticket is to be $500. What are your expected winnings?

a. -$.40
b. $0
c. -$1.00
d. -$.50

2007-07-29 18:38:00 · 6 answers · asked by mia 1

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Question about alternating series test...?

n=0 Σ ∞ -1^(n+1)*e^n / 3^(n+1)

Determine whether series is convergent or divergent, and if convergent find its sum.

I think it's convergent due to alternating series test, but I can't figure out its sum...

2007-07-29 18:21:33 · 2 answers · asked by Anonymous

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Math - permutations :( help?

How many 6 digit numbers are possible using the following numbers

a)111234
b)133445
c)666678

2007-07-29 18:18:30 · 2 answers · asked by Anonymous

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I have a question about series for calculus 2...?

Determine whether the series is absolutely convergent, conditionally convergent or divergent.

a) n=1 Σ ∞ (-1)^n * 2n/(4n^4 +3)^.5

b) n=1 Σ ∞ (-1)^n * (2^n)/(n!)

any help would be appreciated!

2007-07-29 18:16:13 · 2 answers · asked by Anonymous

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Factor 6x^2 + 42y?

and then factor:

x^2 - 7xy

2007-07-29 18:10:52 · 5 answers · asked by Pimpmeister 1

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if you flip a coin six times, what is the percentage that it will be heads more than it will be tails?

meaning that the coint will be heads at least 4 of the 6 times?

2007-07-29 18:10:37 · 3 answers · asked by daniel k 2

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I need help with this math problem.... It says set up the integral, but do not evaluate?

A manufacturer needs to make corrugated metal sheets 36inches wide with cross sections in the shape of the curve

y = .5sinπx, 0≤x≤36

How wide must the original flat sheet be for the manufacturer to produce these corrugated sheets? Set up but do not evaluate the integral.

2007-07-29 18:08:36 · 2 answers · asked by Anonymous

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Please suggest a CLEAR (but totally formal) Calculus book?

Preferably for the undergrad level and oriented to mathematicians. I already know the Spivak, Courant, Banach, Kuratowsky, Apostol, Lang, Strang, Letihold Swokowski, Zill. If you know of another one it would be greatly appreciated.

2007-07-29 18:05:51 · 5 answers · asked by Anonymous

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I don't know how to solve this initial value problem for math class... dy/dx = ycosx ; y(0)=1 please help!

2007-07-29 18:03:14 · 3 answers · asked by Anonymous

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A die is rolled 20 times and the number of twos that come up is tallied.?

A die is rolled 20 times and the number of twos that come up is tallied. Find the probability of getting the given result.

Exactly five twos.

Thanks!

2007-07-29 18:02:26 · 2 answers · asked by fubcka 1

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If you only had this much amount to spend in 4 days how would it be divided?

ok, the amount is $46.99
If you had to divide that over 4 days, how much would you get to spend per day?
Im SO bad at math.

2007-07-29 18:02:16 · 2 answers · asked by Anonymous

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Standard deviation and above average question?

A student wants to be among the top 5% in his class. the mean is 140 and standard deviation is 14. What is the minimum score he needs to get to meet his goal?
Please show me how to do this.

A student scored 150 on his midterm. The mean is 160 and standard deviation is 14. what % of student score above that student?

2007-07-29 18:01:10 · 1 answers · asked by bluemoon 1

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solve for x. x ( x - 6) = x - 12?

2007-07-29 17:55:20 · 5 answers · asked by CPUcate 6

Mathematics - 29 July 2007