Mathematics - 27 November 2007

seriously... its like every problem is different! :[ Now i need to use the second derivative test to find the relative maxma and minima...

y=-2x^2 + 8x + 25

okay. so i can find the first and second derivatives of these just fine.. but the second derivative turns into a constant so how do i go about using that to figure out the extremas?

2007-11-27 05:39:51 · 4 answers · asked by chelsie r 2

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Picture5.png

2007-11-27 05:36:59 · 3 answers · asked by KRISSAY F 1

I'm just wondering what's the easiest way to find percent
(if it's easier for you, give an example)

2007-11-27 05:34:57 · 3 answers · asked by Rebecca S 2

2007-11-27 05:25:02 · 2 answers · asked by Stay Sharp 2

What does the number mean when you have worked out the standard deviation? I.e. I have a number of 14.30525 but what does that number represent etc?

Thanks

2007-11-27 05:11:36 · 5 answers · asked by Anonymous

a. A= 130 degrees, a=19, b=11
b. A=45 degrees, a= 4sqrt2, b=8
c. A=32 degrees, a=16, b=21
d. A=90 degrees, a=25, b=15

2007-11-27 05:06:40 · 1 answers · asked by ehrlich 6

Let C and C' be two abelian categories and let F:C---> C' a (additive?) functor. Suppose that "X non zero implies F(X) non zero". Does this imply that F is faithfull?

2007-11-27 05:06:06 · 4 answers · asked by Anonymous

(2z-5) + (8zsquared - z +7)

2007-11-27 04:51:25 · 6 answers · asked by Anonymous

What do women equal

if TEN = 20-5-14, and MEN = 13 - 5 -14 what do WOMEN equal by the same logic ????

2007-11-27 04:45:50 · 8 answers · asked by Nelson Z 1

I have 2 questions that i am strugaling to answer

1) A curve passes through the origin and touches the x-axis at (4,0)
Given that g(x)= x(cubed)+lx(squared) + mx + n
I have to find the values of l, m and n, but i cant understand how i do it :S.

2) State the co-ordinates of the minimum point on the graph of y=x(squared) - 8x +25

2007-11-27 04:41:45 · 1 answers · asked by Anonymous

can anyone solve this word prob plz ? using substitution method or elimination

suppose the demand and supply equations for a certain product are given by p=220-.0002x and p-90+.003x respectively where p is the price in dollars and x the number of unites. find the point of the equilibrium

answer should be this .....x=40625 and y= 211.815

2007-11-27 04:39:36 · 1 answers · asked by wasif habib 1

1. The weight of two beluga whales and three orca whales totals 36,000 pound. The weights of one of the belugas and one of the orcas add up to 13,000 pounds. Using this information, how much do the belugas weight? What about the orcas?

2. Write a system of equations for this problem.

3. Solve it by substitution.

4. Solve by the addition method.

2007-11-27 04:38:24 · 10 answers · asked by writingxgal 1

If you are, can you help me with the following question please?

I have a right-angled triangle. The hypotenuse is 19 cm. The opposite length is 13 cm. I need to find the missing angle. How do I do it? Thanks!

2007-11-27 04:32:10 · 6 answers · asked by aamir451079 2

2007-11-27 04:28:10 · 6 answers · asked by jay m 1

This is my second post for what i got wrong in a test, and would like to be shown what i did wrong.

List the integers which satisfy both of the following inequalities

2x - 9 <0 and 8- x < 6 ( the < sign on this one is meant to be the less than or equal to however i cannot do it on the keyboard :) )


Also i have another one that confused me

The remainder when X(cubed) - 2X + 4 is devided by (x-2)is twice the remainder when X(squared)+X+K is devided by (x+1)

It wanted me to find the value of K, but whenever i tried working it out i kept getting the remainder as 0 , cant understand where i went wrong

2007-11-27 04:17:51 · 2 answers · asked by Anonymous

2007-11-27 04:17:49 · 7 answers · asked by Anonymous

Say $8.00 is 5% of the number I'm looking for. What does the equation look like?

2007-11-27 04:16:13 · 27 answers · asked by normajean_81 3

1. Solve for x: 5:25 = 7:x

2. Solve for x: 8/x = 12/(x + 2)

3.Solve for x: 12/21 = (x - 5)/x

4. Solve for x: 7/12 = x/15

2007-11-27 04:10:59 · 10 answers · asked by Anonymous

1. What is the slope of this equation?
y = (2/3)x – 4

2. The point (2, -5) is a solution to which of the following equations?
y = -3x + 1
y = -3x - 5
y = -3x - 3
y = -3x + 5

3. Give three ordered pairs that are solutions to the equation
3x - y = 8.

2007-11-27 04:09:07 · 4 answers · asked by ? 2

2007-11-27 04:04:12 · 14 answers · asked by Lori M 1

Consider the function f(x)=2/(1+e^(1/x)). Now why does the graph have a horizontal asymptote at y=1 and why the function has a nonremovable discontinuity at x=0??????

2007-11-27 03:59:20 · 2 answers · asked by gigichic21 1

List all factor pairs for each given integer.

48

a (2)(24), (3)(16), (4)(12), (6)(8)

b (1)(48), (2)(24), (4)(12), (6)(8)

c (2)(24), (3)(16), (4)(12), (6)(8), (8)(6)

d (1)(48), (2)(24), (3)(16), (4)(12), (6)(8)



List all factor pairs for each given integer.

84

a (1)(84), (2)(42), (4)(21), (6)(14), (7)(12)

b (1)(84), (2)(42), (3)(28), (6)(14), (7)(12)

c (1)(84), (2)(42), (3)(28), (4)(21), (6)(14), (7)(12)

d (1)(84), (2)(42), (3)(28), (4)(21), (7)(12), (8)(9)

2007-11-27 03:50:40 · 6 answers · asked by wish on a star 1

2007-11-27 03:47:16 · 4 answers · asked by Tijuana S 1

A 3 digit number for example 1,2,3 can be written in 6 different ways (123,321,231 etc) for higher digit numbers, it becomes a lengthy work, is there any mathematical formula of determining for example a five digit number can be written in how many diff. ways.

2007-11-27 03:46:51 · 3 answers · asked by d_raza1 3

what is 8/x * xsquared/12

2007-11-27 03:34:49 · 13 answers · asked by Alice K 4

2007-11-27 03:34:20 · 2 answers · asked by Tijuana S 1

2007-11-27 03:27:37 · 2 answers · asked by Busby S 2

2007-11-27 03:22:41 · 7 answers · asked by Caramel_Cutie95 1

i need help with logarithems how do you do them?

2007-11-27 03:17:12 · 5 answers · asked by Europekid9 1

2007-11-27 03:16:57 · 5 answers · asked by aki 2