Mathematics - 16 September 2007

If not, can you please explain where I went wrong and what I'm supposed to do?

Here's what I did...

(2x-1)(-x^2+3x-4)

= 2x(-x^2+3x-4) - 1(-x^2+3x-4)2 - 3x + 4
= -2x^3 + 7x^2 - 11x + 4

2007-09-16 08:55:58 · 5 answers · asked by Anonymous

1) The Intersection of two distinct planes is a?
A. Plane, B. Point, C. Line, D.All Of These

I think it would be D, because it contains all 3 terms

2) Points that do not lie in the same plane are?

Wouldn't it be Non-Collinear?

2007-09-16 08:49:31 · 5 answers · asked by Anonymous

also -1, 1, -1, 1

2007-09-16 08:34:30 · 5 answers · asked by Anonymous

C= 24 pi ft.
I know the answers are r= 12 and d= 24
I just don't understand how to set it up to figure this out.

2007-09-16 08:22:21 · 6 answers · asked by Jen 4

b=3, c= 7

a=10, b=24
Please help me solve. I'm edger to find out the answer. Please, if possible, show all steps and I'll award you a best answer.

2007-09-16 08:20:56 · 11 answers · asked by Tameeka 1

(e^x+y) dx + (2+x+ye^y) = 0, y(0) = 1

2007-09-16 08:18:07 · 2 answers · asked by Bryan G 2

http://i18.tinypic.com/5yd2zgl.jpg
This is a v vs. t graph. How do you know what the position vs. time graph will look like?

2007-09-16 08:16:11 · 3 answers · asked by Sweet Victory 2

the problem says "Which of the following relations is a function?"
a. (3, -3) (4, -3) (2, -3)
b. (1, 7) (8, 4) (-3, -4) (1, 4)
c. (2, 0) (2, 3) (2, 8) (2, -3)
d. (1, -1) (0, 0) (1, 0) (0, -1)



if u can figure out please tell me how you got the answer..... thanks!!

2007-09-16 08:08:21 · 2 answers · asked by Jordan 1

I need the nth term for the sequence 4,9,16,25,36. I know the second difference is 2 and it involves an n squared....
Help please asap!

2007-09-16 08:07:19 · 1 answers · asked by Anonymous

find the exact value of :

sin (-210)

sec(315)

please help, thanks

2007-09-16 08:05:07 · 4 answers · asked by rickyricardoiscool 1

Question is:

Two rectangles that are the same except in size.

Rectangle 1(larger of the two):
a)has an area: 64cm^2
b)a long side of 8.2cm

Rectangle 2(smaller of the two)
a)has an area of 25cm^2

b) the long side is unknown, how do we find this out.

I thought you needed to do.

Large area - small area
64 - 25 = 39

The square root of this to change the scale factor to length not area which = 6.2

then do 25(area of smaller) divided by 6.2 = 4? is this correct>

thanks for any help

2007-09-16 07:59:16 · 7 answers · asked by AndyCFCO 1

can u plese tell me how u did the work plz?

thank you!!!

2007-09-16 07:46:56 · 4 answers · asked by Anonymous

I found some info. but i need more for my science class...if you could help that would be great!!!

2007-09-16 07:41:23 · 4 answers · asked by Hannah 1

How many days would it take you to count a million pennies if you could count one penny each second?

2007-09-16 07:34:14 · 5 answers · asked by Anonymous

Please how do you do this?
at least how to solve the equation disregard the solution
Solve the equation then ,check your solution.

3n-4=17



m+14=8-2m



5x+17=2x-10

2007-09-16 07:31:03 · 5 answers · asked by Jessie 1

2007-09-16 07:29:57 · 2 answers · asked by x1gemma1x 1

i need to know that because i have to make a cube type thing to hold 376 pieces of popcorn for science


thank you!!!

2007-09-16 07:28:55 · 3 answers · asked by Unmistakable Ballerina 2

Problem Solving:
SHOW WORK

#1.) For an art project, you make a square print with a side length of 8 inches. You make a frame using strips of wood
1 1/4 inches wide. What is the area of the frame?

2007-09-16 07:22:23 · 4 answers · asked by merrbby14 1

Can you please explain?

2007-09-16 07:20:57 · 1 answers · asked by Anonymous

If an infrequent user is 40% more likely to develop psychosis than a non user, does this mean that 40% of all persons diagnosed as psychotic has a history of infrequent use? It also said that frequent users are 200% more likely to develop psychosis. Does this mean 200% of all persons diagnosed to be psychotic were frequent users? That doesn't make sense, and I'm not really good with math, can you explain what these percentages mean, and how they got those numbers? Thanks!

2007-09-16 07:18:33 · 3 answers · asked by word 7

need help with answer please and steps

2007-09-16 07:14:56 · 4 answers · asked by ..l* 2

2007-09-16 07:12:10 · 5 answers · asked by SueWithTwo 5

A rectangle is drawn with its lower vertices on the x axis and its upper vertices on the curve y= e^-2x
Write down an expression for A in terms of x
Find the maximum value of A
Justify your answers in both cases.
Thanks a lot.

2007-09-16 07:10:04 · 1 answers · asked by Anonymous