Brian is creating a collage on a piece of cardboard that has an area of 150r^2 square centimeters. The collage is covered entirely by pieces of paper that do not overlap. Each piece has an area of √r^3 square centimeters. Use the given information to determine an expression for the total number of pieces of paper used.

Question

ja1 · Answer

$$\frac{ 150r^2 }{ \sqrt{r^3} }$$

I made this^^

ja1 · Answer

That's √r^3 btw

ja1 · Answer

@mathstudent55 @timo86m

ja1 · Answer

@thomaster @dan815

luigi0210 · Answer

I saw a problem somewhat similar to this earlier..

ja1 · Answer

Really? Maybe same quiz xD anyways know how to do this?

ja1 · Answer

my last question and I wanna' sleep D:

luigi0210 · Answer

http://openstudy.com/users/unheard#/updates/52100ccde4b0450ed75cf185 This is it, might help, might not, but oh well worth a try.

ja1 · Answer

ugh all that rationalizing stuff, I was meaning to ask how to do it but I can't bother to learn it now xD do you know any other methods for this?

mathslover · Answer

You don't know rationalizing?

ja1 · Answer

I do but not fully

mathslover · Answer

Okay, so here your problem is rationalizing...

We have : $\cfrac{150r^2}{\sqrt{r^3}}$

We can write : $\sqrt{r^3} $ as $(r^3)^\cfrac{1}{2} = r^{\cfrac{3}{2}} $ 

Right?

ja1 · Answer

Woh wait what? LaTeX is all messed up for me :/

luigi0210 · Answer

Now that Math puts it that way.. it is simple. Maybe sleep would do us some good huh JA?

ja1 · Answer

Yes you have no idea....

mathslover · Answer

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