Someone I need help simplifying!! :)

Question

anonymous · Answer

$$1.   Simplify. 5^{-1}(3^{-2}) $$

anonymous · Answer

$$5^{-1} = 1/5 $$ and $$3^{-2}= 1/9$$ so $$(1/5)*(1/9)=1/45$$

anonymous · Answer

oh okay i get it now! But I really don't understand this one!!

$$mn ^{-4}/p ^{0}q ^{-2}$$

anonymous · Answer

That is equal to: $$\frac{m}{ n^4q^2}$$

anonymous · Answer

these are my options.

$$\frac{ mq ^{2} }{n ^{4}  }$$
$$\frac{ m p }{ n ^{4} }$$
$$mn ^{-4}q ^{2} p ^{0}$$
$$\frac{ q ^{2} }{ mn ^{4} }$$

anonymous · Answer

It would be the third option I presume.

anonymous · Answer

okay do you know this one?

write in standard notation

$$ 6.12 × 10^{3} $$

anonymous · Answer

you've been a lot of help to me!! :) thanks!:)

anonymous · Answer

Just multiply 6.12*1000 since 10^3 = 10*10*10, so 6.12*10*10*10 = 6.12*1000

anonymous · Answer

Btw, are you a girl or a boy? Just out of curiosity.

anonymous · Answer

I got 6,120 and haha im a girl :) the picture could be either one but I have my dog in my lap:)

anonymous · Answer

Yup, there you go, thats right.

anonymous · Answer

Before you ask, I'm a college student. A Math and Law Major. And a Boy.

anonymous · Answer

Oh I'm only in 9th grade.. :/ and I thought you were a girl haha

anonymous · Answer

No, I'm a boy, I just love retro videogames like zelda..