Mathematics - 25 October 2007

2007-10-25 04:56:24 · 10 answers · asked by Anonymous

some one asked me to find out the n th term of the following number sequence

1 2 4 8 16 32 64 128 512 1024 2048....

2007-10-25 04:51:33 · 10 answers · asked by Johny E 1

2007-10-25 04:46:56 · 2 answers · asked by Anonymous

I have tried to answer this trig identity question and I am completely stuck. (I would ask my teacher, but it's half term hols this week)
cot2x + cosec2x ≡ cotx
please start with:
LHS=cot2x +cosec2x
and work it from there until it gets to the stage of
=cotx
=RHS

(cotx = 1/tanx, cosecx = 1/sinx, secx = 1/cosx)
Thanks
If you use other identities (double angle formula etc.) please say which
THANK YOU =]

2007-10-25 04:45:58 · 6 answers · asked by pazuzu_futurama 2

1. x^2 - 10x - 24 = 0

2. 4x^2 = 11x + 3

simplify the expression

3. -5x^0

thank you thank you!

2007-10-25 04:44:43 · 3 answers · asked by Nana Callie loves to sing 4

2007-10-25 04:39:02 · 8 answers · asked by Katherine N 1

can anyone think up of factors for this number, 108 ?

2007-10-25 04:38:57 · 9 answers · asked by Anonymous

2007-10-25 04:31:27 · 6 answers · asked by Katherine N 1

The Combined Perimeter of an equilateral triangle and a square is 10. Find the dimensions of a the triangle and square that produce a minimum total area.

2007-10-25 04:28:46 · 2 answers · asked by Jason 3

2007-10-25 04:26:20 · 3 answers · asked by Katherine N 1

plz tell me answer of this question....fast as possible...!

2007-10-25 04:25:43 · 2 answers · asked by shiraz 1

what is x?
4^(x+2)=log[3](4^6)

The answer i got was x=0.460 but i dont think is correct.
Thanks in advance for your help!!!!

2007-10-25 04:24:18 · 2 answers · asked by Anonymous

could someone please help me do this as i dont really have a clue of how to do it! thanks
charlie

2007-10-25 04:20:56 · 7 answers · asked by chinkles 1

here is a problem with solution
http://docs.google.com/Doc?id=dc83hzcs_222d455g8

i have some doubts

can you please clarify ?

2007-10-25 04:04:51 · 2 answers · asked by calculus 1

what is x? 2^(x-1)=log[3]81^2

The answer i got was x=4. I was just wondering if this was correct??

Thanks in advance!

2007-10-25 04:02:04 · 6 answers · asked by Anonymous

How would i factor this equation ?

1. 9x^2 = 16

2007-10-25 03:57:26 · 6 answers · asked by Anonymous

(a) y = -7x*(-5/3)

(b) y = -(1/x^2) - sqroot x + (1/2)

(c) y = (x^3 + 4)(-x^6 + x^4) (Use Product rule?)

(d) y = (sqroot x + (1/2))(x^3 + x^(1/3) (Use product rule?)

(e) y = 2x^3 + 4 / x + 7

(f) y = x^(2/3) + 3 / x^(1/5) + x

I don't even know which rules to use where, or what the product rule is.

2007-10-25 03:56:03 · 3 answers · asked by Anonymous

Find the 1800th derivative of f(x) = xe^-x.

2007-10-25 03:55:54 · 3 answers · asked by lady_divine@sbcglobal.net 1

2007-10-25 03:49:52 · 4 answers · asked by goodmoyojo 1

home if they want to reach school,which is 5km away, at the same time?

2007-10-25 03:32:17 · 3 answers · asked by sakira 1

Show the conversion factors also.

2007-10-25 03:25:54 · 9 answers · asked by Ryoma Echizen 3

Note that this is NOT CHEATING. My teacher doesn't exactly explain everything so well so I need this for my notes. I need every postulate and theorem up to section 3.3 in the McDougal Littel Geometry textbook.

2007-10-25 03:12:25 · 2 answers · asked by Miss Confused 1

2007-10-25 02:54:52 · 12 answers · asked by MANDY 1

2007-10-25 02:41:26 · 7 answers · asked by Anonymous

(6, ____ ) ( ____, 0) (0, ____ ) ( ____, -4) fill in the blanks.

2007-10-25 02:38:13 · 5 answers · asked by ilovedstny 1

integral sin-1 sqrt(x) - cos-1sqrt(x) / sin-1 sqrt(x) + cos-1sqrt(x)

-1 stands for inverse of
i got
as denom is pi/2 and cos-1 sqrt(x) = pi/2 - sin-1 sqrt(x)
sin-1 sqrt(x) gets cancelled

but answer given is ( 2(2x-1) / pi sin-1 sqrt(x) )+
(2 sqrt(x- x^2)/pi ) -x + c

please help me.

2007-10-25 02:37:13 · 1 answers · asked by ember 2

Anyone can help me calculate the integral of [cos(x^2)] from -pi/4 to pi/4 . Any help is appreciated, thanks!!

2007-10-25 02:29:54 · 3 answers · asked by Mamichiyo 3

solve 9x^5-3x^4-31x^3-13x^2-20x-4=0.

2007-10-25 02:22:32 · 1 answers · asked by Anonymous

A box contains 25 balls, 10 are blue and 15 are red. Lest x denote the number of blue balls in a random sample of 3 balls (sampling without replacement). Construct a probability distribution table for the variable x, and calculate the expected value of x.

Appreciate the help :)

2007-10-25 01:26:03 · 2 answers · asked by Hannah 4

what is a right angle. i asked earlier about a right angled triangle but got it wrong- it was a right angle i needed to know about

2007-10-25 01:24:08 · 12 answers · asked by londonhorsepink 1