Mathematics - 26 October 2007

f(x0 = 2 - X2 adn g(x) = 2x^3 - 5

solve:
(f +g)(2)

(f-g)(-3)

(FG)(-2)

(f/g)(4)

I am SOO LOST

2007-10-26 14:31:35 · 4 answers · asked by a a 1

With respect to the origin O, the position vectors of points A, B and C are (2, 3), (4, -2) and (-3, -3) respectively.

(i) A point E (-2, p) is such that 2 |CE| = |AB|. Find the possible values of p.
Ans: - 5 1/2 or -1/2

(ii) Find the coordinates of the point Q if 2 CQ = BA + 1/2 AC.
Ans: (-5 1/4, -2)

Please help by showing workings...thanks

2007-10-26 14:16:18 · 2 answers · asked by Anonymous

If a hexagon is resting on a flat side, and has a total height of 18, what is the length of each side of the hexagon?

2007-10-26 14:13:23 · 4 answers · asked by Anonymous

I am trying to divide a circular 2-d object (plate) into 6 pieces. The diameter is 7 inches. (think pizza) I do not have a compass, so does anyone know how I might go about doing this so it can be even? Please and Thanks!!

2007-10-26 14:10:46 · 3 answers · asked by Buttered Squash 1

2007-10-26 14:05:05 · 9 answers · asked by Nicole D 1

2007-10-26 14:03:46 · 8 answers · asked by Anonymous

my yahoo name is: chris_rock1717 if you can help me plz

find inverse of f(x) = (x+4)^3
i cant solve this i tried!!!

2007-10-26 13:43:13 · 8 answers · asked by a a 1

evaluate the integral of [ dx /x*sqrt(3+4x ] = integral of "dx" divided by x multiplied by the square root of "3+4x".

answer choices:

a)
-(1/sqrt(3)) ln [ sqrt(3 + 4x) + sqrt(3) / sqrt ( 3+4x) - sqrt(3)]+C

b) (1/sqrt(3)) ln [ sqrt(3+4x) + sqrt(3) / sqrt(3+4x) - sqrt(3) ]+C

c) (1/sqrt(3)) ln [ sqrt(3+4x) - sqrt(3) / sqrt(3+4x) + sqrt(3) ]+ C

d) -(1/sqrt(3)) ln [ sqrt(3+4x) - sqrt(3) / sqrt(3+4x) + sqrt(3)] + C


if you can figure this problem out and explain how you got it i will buy you lunch, i think this problem is done by trig substitution by my answer never comes out exactly how the multiple choice has it.

2007-10-26 13:32:38 · 2 answers · asked by Anonymous

Express the integrand as a sum of partial fractions and evaluate the integral of [ (x^3/x^2+x+1) dx ]

answer choices:

a) 48 ln(x -16) + (48/x+4) - [64/(x+4)^2] + C

b) (x^2/2) - x - 3 ln(x+1) + [1/x+1)^2] + C

c) (x^2/2) - x + 3 ln(x+1) + (1/x+1) + C

d) (x^2/2) - x + 3 ln(x+1) - (1/x+1) + C

2007-10-26 13:17:40 · 3 answers · asked by Anonymous

If we use a length of 70'ft. From a starting elevation of 100' ft above sea level. How many feet will it rise in a 70' ft. distance to aquire a 10% slope up hill?

2007-10-26 13:16:49 · 4 answers · asked by Robert G 2

What is 12?

2007-10-26 13:16:38 · 1 answers · asked by Anonymous

can someone help me solve these 2 questions by completing the sqaure

i) 2x
------- - 3x + 8 = 0
x - 2

ii) ( x - ¾) ² - 7/16 = 0

2007-10-26 12:58:51 · 3 answers · asked by Anonymous

How would I find the exact value using a sum or difference identity?

2007-10-26 12:51:32 · 4 answers · asked by roguetrader12002 4

2007-10-26 12:51:13 · 6 answers · asked by Anonymous

2007-10-26 12:50:06 · 7 answers · asked by Anonymous

2007-10-26 12:49:12 · 4 answers · asked by duderings 2

the president announces that the national deficit is increasing but at a decreasing rate. Interpret this statement in terms of a function and its derivatives.

Please explain it to me in details... I have an exam coming up and I would like to understand this topic well.

2007-10-26 12:46:55 · 1 answers · asked by Anonymous

4 exponent 2 - 3(8 - 12)
___________________

3 exponent 2 - 2

2007-10-26 12:44:53 · 1 answers · asked by Anonymous

WIRE
GETTING IN

2007-10-26 12:43:38 · 6 answers · asked by peanut 1

A(3,1,0)
B(2,-3,1)
C(-1,0,4)
D(5,-6,-2)


i THINK your supposed to make 3 vectors then do the system equation elimniation thing and see if Left Side = Right Side...

except when i do it, its wrong!


can someone show the work??

2007-10-26 12:43:09 · 2 answers · asked by mystery_girl07 2

if the mass is 0.5kg and the density is 10.5g/cm3 what is the volume?

2007-10-26 12:09:23 · 6 answers · asked by wakeboarding <3 2

summation of
[(-1)^(n-1)] / ln (n+1)
from 1 to infinity

please show work

2007-10-26 12:01:06 · 2 answers · asked by Tiffany 4

1. Hookes Law. The distance d when a spring is stretched by a hanging object varies directly as the weight w of the object. If the distance is 67 cm when the weight is 4 kg. What is the distance when the weight is 8kg?

2. The speed of a stream is 3mph, a boat travels 3 miles upstream in the same time it takes to gtravel 9 miles downstream. What is the speed of the boat in still water?

3. Janet, an experienced clerk can fill a certain order in 9 hours, Jim, A new clerk, can fill the same order in 10 hours. Working togehter how long will it take them to fill the order.

I am helping my 16 yr old son with Algebra, all foreign to me, these are the 3 i dont know if the answers are correct, can you help?

2007-10-26 11:55:47 · 2 answers · asked by iwishiwereanangel 3

2007-10-26 11:48:39 · 10 answers · asked by joseph g 1

2007-10-26 11:47:02 · 7 answers · asked by joseph g 1

2007-10-26 11:42:00 · 12 answers · asked by joseph g 1

given a=2, beta=20, c=5

have to find b, alpha, gamma

please help me step by step so I can follow, thanks

2007-10-26 11:31:41 · 4 answers · asked by Anonymous

3x+2y-8=0

Can someone please explain how you do it??

2007-10-26 11:07:43 · 3 answers · asked by Anonymous

how do u get the general solution of y" + 4y' + 3y =x +1

iv got alot of similiar question like this, but i dont know where to begin, if you can help me i would REALLY appreciate it!!!!!

2007-10-26 11:06:10 · 2 answers · asked by red-poka-dot-joe-bird 1

a be used to solve any problem involving triangles
b only be used for right angled triangles
c only be used for triangles that have an obtuse angle
d only be used for triangles that have a straight angle

im not sure a or b thank you so much and god bless you forever

2007-10-26 11:05:15 · 9 answers · asked by Anonymous