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20th-Sep-2006 08:37 pm - Welcome Karla!
Okay so here I am posting for the first time sinces school has started.  Well thanks Rachel for the good stuff that's already been going on. 
But I would just like to let everyone know that I'm the co-manager/moderator or whatever it's called. Basically I run this place along with Rachel, so watch out! Hehe. Just kidding. 
Well I would just like to say that everyone's welcome and that you're free to post anything that has to do with school in order to help each other. But REMEMBER there are rules. Among the most common ones: Please oh please put a subject with your posts. I know it's hard sometimes because I did it once, but only once! So if you've made the mistake please don't make it again. If you're new to us. Read the rules. Thank You and Welcome to allnighters.
14th-Sep-2006 09:03 pm - AIM Chat Room
tvfandom_icons belle
Okay. Even if nobody is in it, the chat will still keep its name.
Because I highly doubt that anyone will take this chat name.

Chat name IB Binilnilenium

translation: ib 2009, for those of you not in chemistry.
24th-May-2006 12:38 pm(no subject)

I don't know if anybody went on k12 yet, but the last time I checked [which was just now] Tobin and Lopez have updated the grades.
So you should be able to see what you got on the finals and your final grade.
It should be in Grades and then Report Cards.

Just letting you all know, because I know all of you are dying to know what you got on the Tobin final. Haha.

- Jessica.
15th-May-2006 07:04 pm - Geometry Chapter 13, Study Guide.

Notes that could help you on Gorman's tomorrow.




Note: AB in Magnitude of a vector is a ray. 

15th-May-2006 06:42 pm - Geometry Chapter 13, Study Guide.
Here are the theorems, facts, and definitions that could help tomorrow on the quiz or test whatever it's going to be. 


Geometry Chapter 13

 

Theorem 13-1:  The Distance Formula

The distance between points (x1, y1) and (x2, y2) is given by:

                                     

                                    d= √ (x2-x1)2 + (y2-y1)2

 

Theorem 13-2: An equation of the circle with center (a,b) and radius r is

 

                                    (x-a)2 + (y-b)2 = r2

 

To find the slope of a line:

                                    Slope m= y2-y1

                                                     x2-x1

 

Facts:

Lines with positive slope rise to the right

Lines with negative slope fall to the right

The greater the absolute value of a line’s slope, the steeper the line

The slope of a horizontal line is zero

The slope of a vertical line is not defined

 

Theorem 13-3:

Two non-vertical lines are parallel if and only if their slopes are equal

 

Theorem 13-4:

Two non-vertical lines are perpendicular if and only if the product of their slopes is -1.

                                               m1 * m2 = -1, or m1 = - 1/m2

 

Theorem 13-5: The Midpoint Formula

The midpoint of the segment that joins points (x1, y1) and (x2, y2) is the point

                                  (         x1 + x2         ,          y1+y2              )

                                                 2                             2

 

Theorem 13-6: Standard Form

The graph of any equation that can be written in the form

                                           Ax + By = C

Where A and B are not both zero, is a line

 

Theorem 13-7: Slope-Intercept Form

A line with the equation y =mx + b has slope m and y-intercept b

 

Theorem 13-8: Point-Slope Form

An equation of the line that passes through the point (x1, y1) and has slope m is

                                            Y – y1 = m(x - x1)

 

 

 

Terms to know:

 

Slope: the ratio of the change in y (vertical change) to the change in x (horizontal change). 

 

Vector: Any quantity such as force, velocity, or acceleration that has both magnitude (size) and direction.

 

Magnitude of a vector: The length of the arrow from point A to point

B and is denoted by the symbol 

                                                         |AB |

 

Scalar multiple of vectors: The product of the vector (a,b) and the real number k is the scalar multiple (ka, kb).

 

Linear equation: and equation whose graph is a line

 

Dot product: For vectors (a,b) and (c,d), the number ac+bd. The dot product of perpendicular vectors is zero.

 

_____________________________________________________________________________________

Note from Karla: The format is a little bit changed. All you have to be aware of is that the subscript of the formulas like the 1s and the 2s that are in-between the division line are not supposed to be there. They're supposed to be above the division line. So do not get confused by that. 
Another thing, in the magnitude of a vector definition, AB is a ray, The line just didn't show up.

Good Luck!

10th-May-2006 09:01 pm - Africa Video Notes
Remus Robinson (Shoebox!)
God, I've got a lot of stuff posted on here. Let me know if it's being used, alright? It's not that I don't like helping people, it's just it takes a while to type everything and I need to study just as much as everyone else does because I fail at everything similar to a test. Thanks!

And so, without further ado, I bring you:
Africa Video Notes (sorry for the shortness)
By: Rachel Miles

10th-May-2006 02:35 pm - Africa Notes, Part 2
Remus Robinson (Shoebox!)
Africa Notes, Part 2 (includes notes on East Africa and West Africa)
By: Rachel Miles

10th-May-2006 02:29 pm - Africa Notes, Part 1
Remus Robinson (Shoebox!)

Africa Notes, Part 1 (includes notes on Sub-Saharan Africa, Bantu people, and Bantu migrations)
By: Rachel Miles

3rd-May-2006 09:38 pm - Islam Notes, Part 3
Angel!twirl
Final batch of notes.

Islam Notes, Part 3
By: Rachel Miles

3rd-May-2006 09:35 pm - Islam Notes, Part 2
Angel!twirl
Notes are seperated by the day they were taken.

Islam Notes, Part 2
By: Rachel Miles

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