Mathematics - 19 November 2007

use composition to prove that f(x)=e^x+2 and g(x)= -2+LnX are inverse functions

2007-11-19 07:34:29 · 3 answers · asked by * B 1

a) x[squared]+5x+6
b) x[squared]-4x-12
c) x[squared]-7x+10

Thanks in advance..

2007-11-19 07:34:23 · 8 answers · asked by Anonymous

Ok i need help finding the volume and surface area of these cylinders i will state the height first then the width or diameter. First one 11.5 by 6.Second one 5.5 by 3. Third one 110 by 60. thanks so much

2007-11-19 07:27:08 · 2 answers · asked by Nickels6 2

Ok i need the volume and surface area of each one of these cylinders. First 11.5(height) by 6(width). Second 5.5 by 3. Third and last 110 by 60 Please and thanks

2007-11-19 07:15:18 · 6 answers · asked by Nickels6 2

2007-11-19 06:57:54 · 2 answers · asked by uphilbigp 1

Determine if total number N of cards in the deck is prime number?

2007-11-19 06:51:48 · 7 answers · asked by Alexander 6

2007-11-19 06:48:32 · 21 answers · asked by Alexander 6

3p - 1 = 5(p - 1) - 2(7 - 2p)

Would the answer be 3, 0, -9, or -10?

I keep getting a wrong answer!

2007-11-19 06:46:42 · 4 answers · asked by fattiecat07 1

some girl asked almost the same problem we must have the same class but
for this function y=logbase3[x+6]-4
the domain would be x>-6
and would be (-inf,inf)
I know you plug 0 into x for the y int can some show me how you get the answer and also the equation of the functions asymptote I know this is alot but if someone could please help it would make my day

p.s what would the graph look like

2007-11-19 06:29:15 · 2 answers · asked by Anonymous

Two problems:

1. I have NO idea how to do this and its not in my book

Explain how to use the graph of f(x)= (3/4)^x to produce the graph of 3/4(x) +2

2. This one I got down to where I have to factor and I cant factor 5x^2 + 75x -10 .... I think I went wrong somewhere???

Solve: log 5x + log (x + 15) = 1

2007-11-19 06:27:46 · 3 answers · asked by betseyjayne82 1

1. u x v
2. u dot(u x v)
3.the projection of u x v along w
4. the angle between u x v and u

2007-11-19 06:24:49 · 4 answers · asked by sakinah_123 1

The length of a rectangle is 1 in. more than twice its width. If the perimeter of the rectangle is 50 in., find the width of the rectangle. Solve using an algebraic equation

2007-11-19 06:23:13 · 10 answers · asked by jaeelarr 1

f(x)= √x
f'(x)=1/2√x

now how would I find f"(x) and f'''(x)?

2007-11-19 06:16:20 · 2 answers · asked by Matty B 3

calculator aint working on comp need answer in fractions thanks

2007-11-19 06:07:58 · 8 answers · asked by lztexan 3

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2007-11-19 06:03:48 · 11 answers · asked by kakshko 1

Let a sequence be defined by x(n+1) = ( x(n)^5 +2)/6 with x(1)=0.

Show x(n+1)-x(n) =< 5/6 [x(n)-x(n-1)] =< 1/3 (5/6)^(n-1)

Presumably we can solve this using induction, though it seems quite tricky and I've made a mess of it so far. Or is there a better method? Thanks very much.

2007-11-19 05:53:00 · 2 answers · asked by Anonymous

Simplify sqrt (-49) - sqrt (-8)

Simplify 16-3/4

2007-11-19 05:21:20 · 3 answers · asked by B K 1

Ok, I'm doing a question that I am supposed to solve using the Quadratic Formula. I've already finished most of it, but am stuck at the last part. The equation is

21. 6x^2 + 7x + 2 = 0

I've gotten through most of the steps, and right now I'm at

x = -7 (plus/minus) the square root of 1, divided by 12.

Hard to write out the way it looks on paper, but I'll attempt.

.......-7 (+/-) 1 (sqrt)
x = ----------------------
...............12.............

Anyway, how do I go further? I don't understand what step is next. You can't simplify either -7 or 1, and I'm just confused. Maybe I did the whole thing wrong, but can anyone help?
Thanks so much!

2007-11-19 05:20:46 · 7 answers · asked by Anonymous

2007-11-19 05:00:48 · 17 answers · asked by bainesem 1

about 0.6 per cent a year. Thus, if t is time in years since 1990, the population P, in millions, of Hungary can be approximated by P = 10.8(.994)^t
What does this model predict the population of Hungary will be in the year of 2000?
How fast (in people/year) does this model predict Hungary's population will be decreasing in the year 2000?

2007-11-19 04:53:52 · 2 answers · asked by simonkf2002 1

Anyone know?

2007-11-19 04:48:28 · 6 answers · asked by Anonymous

2007-11-19 04:40:59 · 11 answers · asked by emily r 1

a) the integral from 2 to 5 of [(x-3)(3x+5)]dx

b) the integral from 0 to pi/3 of [(1/sin x)/(cos ^2x)]dx

c) the integral from pi/4 to pi/3 of [csc t(csc t-2cot t)]dt

d) the integral from ln 3 to 3ln3 of [e^x]dx

pleasee show as much work as possible for any of these i am veryy confused! thanksss!

2007-11-19 04:33:07 · 1 answers · asked by dee j 1

2m = n - 3
3m = 2n - 9

2007-11-19 03:27:34 · 4 answers · asked by everthesame17 1

2007-11-19 03:23:05 · 2 answers · asked by nathan 2

Find the arc length
A) radius equals 8 inches and theta equals 80 degrees
B) radius equals 15 feet and theta equals 2

2007-11-19 03:21:19 · 3 answers · asked by nathan 2

2007-11-19 03:20:09 · 7 answers · asked by lace j 1

thank you for answers now I am in need once again

5x^2+30+40

4x^5+32x^2

45Y^2-6y-3

X^3-25X

x^2+36

14y^2+15y+4

36y^2+60y+25

y^5-256y

49y^2-9

2y^6-2y^3

x^2-8xy+12^2

75x^3y^3-3xy^3

2007-11-19 03:08:06 · 1 answers · asked by beartrap4151 1

2007-11-19 03:03:16 · 3 answers · asked by Anonymous

im supposed to divide the problem below, but i cant figure out how to solve it.

(3x – 2)(x - 4) – (x - 4)(6 – 5x) / (4 – x)(8x – 1)

=[3x^2 -14x+8 -(-5x^2+26x-24)]/[(4-x)(8x-1)]

= [8x^2-40x+32]/[(4-x)(8x-1)]

= 8x^2 -5x +4)/[(4-x)(8x-1)]

=(8x-1)(x-4)/[(4-x)(8x-1)]

= -1

this was my teachers response, but i cant figure out how to factor out the GCF.
Don't FOIL in the numerator. Factor out the GCF instead. What do you get?

2007-11-19 02:47:04 · 4 answers · asked by Anonymous