Mathematics - 31 December 2007

2007-12-31 02:41:08 · 6 answers · asked by Jerry W 1

Hi i need help with finding the area of a rectangle
sorry this picture is bad but its hard to draw ill explain as best as i can....its a rectangle with a line going diagonly threw it which is equal to 13 and the bottom is base is equal to 12..their is also a right angle symbol at the bottom right
thanks for your help

-----------------------------
[......................... /........]
[............... ./..................]
[........../......13............. ]
[../............................._]
[-------------------------[--]
12

find the area of this rectangle?

2007-12-31 02:40:35 · 6 answers · asked by liz 2

A.x=-5
B.x=-2
C.x=-80
D.x=-32


solve

2007-12-31 02:31:43 · 8 answers · asked by Anonymous

Is this an odd or even function? Explain please

f(x) =

x
-------------
(x^2 -1)

x^2 -1 is an even function

x is an odd function

and when you sub in f(-x), you cant turn it into an even or odd function, which is expected, as it is neither

However, when you graph the function, it turns out as an odd function, which came to a big surprise to me

I though that if we broke down x^2 -1 into (x-1)(x+1), and then try it, the -1's still cancel each other out, as if they'd been squared, and when you actually sub the values in for f(x), it does form an odd curve!

The equation is saying its neither and the graph is saying its odd! Punch it in a program and you'll see xD... ='(

I'm lost. Either I'm forgetting something or I didn't understand odd and even's when I did them a while back.

Can somebody explain this, because I aint gonna sleep till I get this.... lol xD - 2 am here

2007-12-31 01:58:55 · 8 answers · asked by Suki 4

There is a bus with 7 girls,each girl has 7 bags, each bag has 7 big cats,each big cat has 7 small cats(all cats has 4 legs).
How Many legs are there on d bus????

2007-12-31 00:40:45 · 15 answers · asked by Anonymous

2007-12-31 00:28:09 · 17 answers · asked by joycewales 1

Jaime and her friend can keyboard 45 words per minute. Six other students in the class can type 30 words per minute. Four students have not yet timed their speed. Find the ratio of students who have timed their keyboarding to those who have not.

.5
2
.7
1.5

2007-12-31 00:07:28 · 3 answers · asked by sunny p 1

A curve C represents the graph of y=(x^2)/25 x≥0

The points A and B on the curve C have x-coordinates 5 and 10 respectively.
a)Write down the y-coordinates of A and B
b) Find an equation of the tangent to C at A

I can do part a), but i don't get how i can differentiate (x^2)/25?????!!!!!

Thank YOU in advance :D

2007-12-31 00:06:42 · 6 answers · asked by Anonymous