• Apr 9th 2010, 09:41 PM
bringash
http://i41.tinypic.com/5ullhi.jpg

i have no clue how to do this problem ... can someone please help ?!?!? is there a formula ?
• Apr 9th 2010, 09:43 PM
Anonymous1
Quote:

Originally Posted by bringash
http://i41.tinypic.com/5ullhi.jpg

i have no clue how to do this problem ... can someone please help ?!?!? is there a formula ?

$H(w)= \frac{c}{w}$

$H(9)=2.78... so,$

$2.78 = \frac{c}{9}$

$\Rightarrow c = \frac{2.78}{9} = .30889$
• Apr 9th 2010, 09:43 PM
You have a point on the graph (9,2.78). It gives you that H(w) = Constant / w. Plug in the H value, 2.78, for H(w), and the w value, 9, for w, and solve for the constant, 2.78/9.
• Apr 9th 2010, 10:13 PM
bringash
thanks alot guys

http://i44.tinypic.com/2r239df.jpg
• Apr 9th 2010, 10:17 PM
Try cancelling.

• Apr 9th 2010, 10:18 PM
harish21
Quote:

Originally Posted by bringash
thanks alot guys

http://i44.tinypic.com/2r239df.jpg

When $x=-2$ or $x=1$, you end up divding the terms by 0.

What happens when you divide a term by 0?
• Apr 9th 2010, 10:20 PM
bringash
Quote:

Try cancelling.

thanks bro no wonder this website is called mathHELPforum.com
• Apr 9th 2010, 10:20 PM
bringash
Quote:

Originally Posted by harish21
When $x=-2$ or $x=1$, you end up divding the terms by 0.

What happens when you divide a term by 0?

that says does not equal
• Apr 9th 2010, 10:26 PM
bringash
im having trouble understanding the wording of the second problem thats why i resorted to you guys for help ... can you please tell me if its true or false so i can do the other ones that are similar ... and please explain why its true or false
• Apr 9th 2010, 10:27 PM
harish21
Quote:

Originally Posted by bringash
that says does not equal

Yes. the question says when x does NOT equal -2 or 1.

When x = -2 or x =1, you are dividing by 0, which gives $\infty$

So, when x is any other number except -2 or 1, then the equation makes sense.

So, what can you conclude from here?
• Apr 9th 2010, 10:33 PM
bringash
that its true ... thanks alot bro
• Apr 9th 2010, 10:37 PM
bringash
im sorry for the dumb questions, but what would i do in this case ?

http://i43.tinypic.com/25auvfd.jpg
• Apr 9th 2010, 10:48 PM
Same as before, H=25, w=10. Substitiute and solve for the constant. $\mathrm{constant} = H/w = 25/10 = \cdots$

Quote:

Originally Posted by harish21
When x = -2 or x =1, you are dividing by 0, which gives $\infty$

Shh, $-\infty$ don't cry. I know everyone only thinks about your brother $+\infty$...
• Apr 10th 2010, 06:15 AM
bringash
Quote:

Same as before, H=25, w=10. Substitiute and solve for the constant. $\mathrm{constant} = H/w = 25/10 = \cdots$
Shh, $-\infty$ don't cry. I know everyone only thinks about your brother $+\infty$...