help me?really easy question if your in high school?

2008-11-04 11:05 pm
A, B, and C are points on a line with AB = x inches and BC = y inches. What is the length of AC if B is between A and C?

is the answer x+y or xy

sorry but im just feeling a little different today because i'm so focused on the election i can't concentrate on school work.
更新1:

idk and nicnac-lmfaooooo.i thought this work they were giving me was too easy.i'm like i knew this stuff in 8th grade.it's just that obama and everything.i'm just so psyched idk what to do with myself.i'm going to like run around the neighborhood screaming obama when i hear the results in tv.i luv him that much-lol.

回答 (13)

2008-11-04 11:17 pm
參考: meee
2008-11-05 7:31 am
Now, since I am on a computer and not a piece of paper I have to do this in my head. This is what I would do.

First get a piece of paper.

on the piece of paper, draw a line and place point A on the left side of the line, point B in the middle, and point C on the right (ignore the dots seperating the letters):
.______._______.
A ........B...........C

Then below the line, draw a mini line from point A to point B. Label that X. Again, draw a mini line from point B to point C and label that y:

._______._______.
A...........B...........C
|------------| |-----------|
......x...........y.......

Then if you add a plus sign between x and y and an equal sign after y your problem should now look like this:

x+y=

now i think that since x and y are two different variables you can't add them together, but think about what your teacher said to do in class, or refer back to the beginning of the chapter in your book and it will provide examples for you to look at.

Hope I've helped you understand this!
參考: im not a nerd but this was fun to answer =] wowww I totally forgot about the transitive property! AB+BC=AC (see, you're getting rid of the Bs!)
2008-11-05 7:38 am
x + y :)
It might make more sense if you tried drawing it out.
2008-11-05 7:24 am
I'm pretty sure it's x+y. But I HATE MATH WITH A PASSION! Numbers make me want to throw up. :P Words cannot describe how much I hate math.
2008-11-05 7:20 am
x+y
2008-11-05 7:14 am
The answer is X+Y.
2008-11-05 7:12 am
um 2
參考: im in high school...but i still dont get it
2008-11-05 7:12 am
I couldn't anser that if i was threatened my life. Im in a low math class. But try going to myalgebra.com. It's free and all you have to do is type in your math problem and what kind of problem it is and it solves it for you.
2008-11-05 7:11 am
x+y
otherwise it would be x multiplied by y, which would be incorect

my teacher says so.
GO OBAMA!
2008-11-05 7:09 am
x+y
you can always remember this because of the transitive property! AB+BC=AC

收錄日期: 2021-05-01 01:12:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081104150555AAWB6pH

檢視 Wayback Machine 備份