Mathematics - 29 November 2007

f(x) = -x^2 + 9
g(x) = 2x^2 + 5x - 3
a) (g-f)(x) pretty sure the answer would be 3x^2 + 5x-12
b) f(g(x)) not really sure on if you would do the negative first or square it first and then take the negative
c) (f/g)(x) pretty sure the answer would be (-x+3)/ (2x-1)

2007-11-29 07:33:47 · 1 answers · asked by Anonymous

2007-11-29 07:33:27 · 2 answers · asked by Alexander 6

2007-11-29 07:30:40 · 9 answers · asked by Anonymous

For all positive integers n, the symbol n! denotes the product of the first n positive
integers.
Example: 4! = 4x3x2x1=24
Find the value of n for which (3!)(5!)(7!) = n!

2007-11-29 07:23:45 · 7 answers · asked by Anonymous

Suppose that you have 14,000 to invest. Which investment yields the greater return over 10 years: 7 percent compund monthly or 6.85 compunded continuosly?

I kind of get the problem but i cant figure out what to plug in for n i know n=monthly compounding but can anyone show me how to do the problem or how to figure out what n is

2007-11-29 07:21:19 · 2 answers · asked by Anonymous

At a particular time, a tree casts shadows 29meters long on horizontal ground. At the same time, a vertical pole 3meters high casts a shadow 4meter long.

How do I calculate the height on the tree to the nearest meter?
what should I do first? Im lost! Please help if you can. Thanks.

2007-11-29 07:13:16 · 13 answers · asked by carmenclassof06 4

2007-11-29 07:03:29 · 6 answers · asked by needalittlehelp 1

a=?

2007-11-29 06:57:28 · 9 answers · asked by Anonymous

Can someone tell me how to figure this up
I dont understand what this symbol is in the equation ^
L= 2.43 X 1.01^0.3326

2007-11-29 06:50:51 · 7 answers · asked by Anonymous

2007-11-29 06:46:28 · 11 answers · asked by clavdivs 4

1.

22y^4-33y^3+11y^2




2.

77r^7s^7-84r^8s^4

2007-11-29 06:38:56 · 7 answers · asked by wish on a star 1

I have an exercise with a question that says:

Use the method of Laplace transforms to determine the solution of the first order ordinary differential equation:

4dx/dt + x = 1 + 4cos(2t); x(0)=1

2007-11-29 06:36:34 · 4 answers · asked by Kable 1

2007-11-29 06:34:31 · 7 answers · asked by Tanya L 2

a/(sinA) = b/(sinB)
where lower-case letters refer to the sides and upper-case letters refer to the angles opposite those sides
The side b in error by 1.1%.
Aand B are given as 25 degrees and 58 degrees respectively, to the nearest degree.
Using partial differentiation find the greatest percentage error in the calculated value of a.

2007-11-29 06:29:36 · 3 answers · asked by ozi 1

i have to write them as a ratio as an equivelant fraction with a denominator of 100

2007-11-29 06:20:12 · 3 answers · asked by Anonymous

Why does the polar equation r = (2)sin(theta) become x^2 + (y -1)^2 = 1

2007-11-29 06:16:51 · 5 answers · asked by jeff h 1

1.Given the function f(x) = x2 - 6x + 8, find the y-coordinate of the vertex and list the ordered pair.
A.80 (-6, 80)
B.35 (-3, 35)
C.8 (6, 8)
D.-1 (3, -1)

2. Given the function f(x) = x2 - 6x + 8, find the x-coordinate of the vertex.
A.-6
B.-2
C.3
D.6

3.Given the function f(x) = x2 - 6x + 8, find f(-2). f(-2) =
A.-6
B.6
C.10
D.24

4.Solve the following quadratic equation.0 = x2 + 5x - 9
A.x = 2.5 and y = -15.25
B.x = 2.5 and y = 2.75
C.x = -1.405 and x = 6.405
D.x = 1.405 and x = -6.405

please help...will give 10 points to whom ever gets these right...please and thank you!

2007-11-29 06:02:52 · 3 answers · asked by MEB 2

A ship travels 55km on a bearing of 11 degrees, and then travels on a bearing of 101 degrees for 133km. Find the distance of the end of the trip from the starting point to the nearest kilometer.
54km
144km
10km
188km

2007-11-29 06:02:10 · 5 answers · asked by Anonymous

From a balloon 996 feet high, the angle of depression to the ranger headquearters is 46 49' degrees. How far is the headquarters from a point on the ground directly below the balloon (to the nearest foot)?
930ft
925ft
935ft
940ft

2007-11-29 05:54:10 · 4 answers · asked by Jimmy1992 1

3tan^3x=tanx
my solution:
tanx(3tan^2x-1)=0
tanx=0 > x = 0,pie (how do i get this PIE FROM)
or 3tan^2x -1=0
tanx=+-radical3/3
x = pie/6,5pie/6,7pie/6,11pie/6(HOW DO I GET ALL THESE PIES FROM?)
(I just don't undrestand how to get these pie/6,5pie/6,7pie/6,11pie/6 from?)

2007-11-29 05:46:28 · 6 answers · asked by frenchies 2

1. Endpoints of a diameter are (5, 3) and (8, -3)

2. Endpoints of a diameter are (6, 9) and (4, 9)

2007-11-29 05:42:37 · 3 answers · asked by wrongnumber 1

sin (a+2) - sin(a) = 2 cos(a+1)sin(1)

2007-11-29 05:33:28 · 3 answers · asked by Princess 2

Find all solutions on 0≤θ<360 of: √3 tanθ - 2sinθtanθ = 0

2007-11-29 05:32:15 · 3 answers · asked by Princess 2

(sinx - cosx)^2 = 1-sin2x

2007-11-29 05:24:46 · 2 answers · asked by Princess 2

Okay, I was doing pretty well up until these...

1. Center at (3, 3); tangent to the x-axis

2. Center at (0, 0); passes through (2, 10)

3. Endpoints of a diameter are (5, 3) and (8, -3)

Someone PLEASE explain these to me!

2007-11-29 05:16:39 · 5 answers · asked by wrongnumber 1

Find the upper limit and lower limit for the zeros of the following function.

f(x)=x^3 -3x^2 -2x +15

2007-11-29 05:15:14 · 1 answers · asked by nickj3315 2

Can you help me find the interior angle of 10:10 a.m.?

2007-11-29 05:00:13 · 6 answers · asked by Ted S 2

This Question is really bugging me:

Let z = cos A + iSinA

Express 2/(1+z) in the form 1 - itan(kA), z not equal to -1.

Can anybody solve this please?

2007-11-29 04:59:41 · 1 answers · asked by alanjb 1

1) Let n be an interger. Prove that the gcd(n, n+2) =1 or gcd(n, n+2) =2

2) A chemist has five assistants engaged in the research of nine compounds that must be synthesized. In how many ways can the chemist assign the syntheses to the five assistants so that each assistant is working on at least one synthesis.

2007-11-29 04:55:27 · 1 answers · asked by Anonymous

As in ci is the term that goes into the function.

2007-11-29 04:55:21 · 2 answers · asked by Jason 3