Mathematics - 28 November 2007

The area of a rectangle is 576m^2. The lenght of the rectangle is 4 times greater than the width. What are the lenght and width of the rectangle?

2007-11-28 08:48:08 · 1 answers · asked by erikjjjacob 1

2007-11-28 08:47:38 · 3 answers · asked by RK 2

Hey, i was hoping someone could help me with rounding floats in C programming language to the closes 10 (ex: 12 > 10, 16 > 20, 26 > 30) and also to two decimal places (ex: 1.2359453 > 1.24, 23,33999 > 23.34)

2007-11-28 08:46:05 · 2 answers · asked by Anonymous

2007-11-28 08:45:52 · 2 answers · asked by RK 2

x= - 5y
x= + y =8

2007-11-28 08:39:52 · 2 answers · asked by erikjjjacob 1

y= X -1
y= 2x - 5

2007-11-28 08:39:07 · 3 answers · asked by erikjjjacob 1

the 4 shelves have lengths that are to be a series of consecutive even numbers.

2007-11-28 08:29:14 · 7 answers · asked by Anonymous

Here's the problem:

308q^8r^6t^2 AND 364q^2r^4s^6t^8


Thank you so much in advance! This is 10 percent of my final grade!

2007-11-28 08:26:51 · 5 answers · asked by Alice 3

2007-11-28 08:23:25 · 4 answers · asked by Anonymous

Hi, I need help trying to figure out how to do some math problems. I'm totally confused.

3b - 5 - 2b = 5
b=

3(x - 4) = 15
x =

5n + 4 - 8n = - 5
n=

36 = 4 (q - 5 )
q =

Here are a few of the examples I have to do. Any step by step help would be appreciated. I have about 30 problems to do. Thanks. so much

2007-11-28 08:20:04 · 10 answers · asked by Anonymous

What are the equations to find...

The area of:
A. Circle
B. Square
C. Triangle

The volume of:
A. Circle/Cylinder
B. Sqaure/Cube
C. Triangle/Prism


Thanks for any help, I appreciate it.

2007-11-28 08:15:02 · 9 answers · asked by Anonymous

2007-11-28 08:10:11 · 2 answers · asked by jiles357 1

My math teacher posed this as a sort of challenge for us. Can anyone help me with it?
Starting from the general equation ax2 + bx +c =0. Come up with the quadratic equation for this equation by completing the square.
Thanks so much for any help!

2007-11-28 08:09:14 · 6 answers · asked by Kit~Kat 2

Can anyone help me? I have a maths textbook but like my classbook it never tells me the method to do the very hard questions. Like all the differentiation questions are f(x)= x^3(x^4+x^6), never a question or example that tells me how to differentiate for example the one below. Your help will be greatly appreciated! Thanks!

f(x) =(x+2)^3 how do you differentiate the equation when it is to ^3?

f(x) = x ^ (3/2) - 8 x ^ (-1/2)
Evaluate f(3) giving the answer in its simplest form with a rational denominator?

How do i evaluate (5 and 4/9) ^ (-1/2)
and find the value of x where (1+x) / x = sqrt 3 giving answer = a+b sqrt 3


Straight line l is perpendicular to line with equation 3x-y=4and passes through the point with co-ords (3,0)
How do i find l? When it is perpendicular do i just put 1 over?

Also how do i find the co-ordinates of the point where l interesect with line y= 2x-13?

2007-11-28 08:00:27 · 2 answers · asked by keiryuuyukito 1

5x + 4=29
3x +1=13
7x +3=17
8x -3=13
10x +9=12
2x -7= 10

2007-11-28 07:56:28 · 15 answers · asked by pussicus911 2

Homework is to change this into a 1 step equation. (I can solve)

The base of an isocles triangle is 5 meters less than 4 times the length of a side. The perimeter is 67 meters. Find the length of each side and the base.

I really don't understand this stuff, so if someone could help that would be great.

2007-11-28 07:52:51 · 4 answers · asked by Anonymous

{3y = x + 54
{2x + 6y = 0

a. (9, -27)
b. ( -27, 9)
c. infinite number of solutions
d. no solution

2007-11-28 07:52:41 · 4 answers · asked by . 1

I was asked to solve this pair of simultanious equations using the substitution method:

2x+y=9
x-2y=7

This is what i did:

Rearrange x-2y=7 to make y the subject:
-2y=7-x
Y=3.5-0.5x

Sub in y:
2x+3.5-0.5x=9
1.5x+3.5=9
1.5x=5.5
X=3 2/3

Sub in x:
3 2/3 -2y=7
-2y=3 1/3
y=1 5/6

Am I right?

2007-11-28 07:37:27 · 7 answers · asked by Anonymous

Evaluate Please:

Log Base 9 (9*sqrt 3)

Here are my answer choices, please make sure to tell me how you arrived at this answer or it does me absolutely no good. Thanks!

a) -5/2
b) 5/2
c) -5
d) 4
e) 2

2007-11-28 07:25:52 · 6 answers · asked by Flauta 2

2007-11-28 07:24:50 · 4 answers · asked by Anonymous

2007-11-28 07:22:17 · 8 answers · asked by smileyD 1

4x + 1 = 21 and 3x-3=18

2007-11-28 07:22:09 · 26 answers · asked by pussicus911 2

how does 5/12pi = cos( pi/6 + pi/4)????

2007-11-28 07:19:57 · 3 answers · asked by Anonymous

2007-11-28 07:13:48 · 4 answers · asked by smileyD 1

OK....here goes the foolish question of the day. ;0)
82 divided by 8. Why do we not divide into the 8 and skip right to the 82? 8 can go into 8 right??? The answer does not come out right though it you divide into 8 first ( such as if the equation was 92 divided by 8 ....you would divide into the 9 first then bring down the 2 etc. to get the correct answer ). My son asked me this as a homework question. Help?! Thank you in advance for your assistance.

2007-11-28 07:13:28 · 7 answers · asked by Kim M 1

2007-11-28 07:12:30 · 3 answers · asked by Anonymous

I need the right answer to this problem 3/x2 = 125. Show me how you got your answer please. Thank You

2007-11-28 07:09:31 · 2 answers · asked by Hugh B 1

please explain how you got the answer:

Convert the rectangular coordinates to polar coordinates with r>0 and with theta between 0 and 2pi.

(3squareroot3, -3)

2007-11-28 07:09:27 · 3 answers · asked by Anonymous

x^2 + y^2 - 4x - 6y - 12 = 0

find the centre and radius of the circle

2007-11-28 06:53:50 · 3 answers · asked by Anonymous

my answer is -3,7

2007-11-28 06:50:24 · 7 answers · asked by thonia 1