I have honestly no idea what to do. Can someone explain this to me?

Question

lena772 · Answer

attachment

kc_kennylau · Answer

We can already see the answer in the first step :)

ganeshie8 · Answer

if it helps

27 = 3 x 3 x 3

lena772 · Answer

omg plenty of people :O

kc_kennylau · Answer

So you know how to do it now? :)

agent0smith · Answer

3 x 3 x 3 is the same as... 3^3

kc_kennylau · Answer

lol @kittiwitti1 is trying to write a long paragraph

kc_kennylau · Answer

was*

lena772 · Answer

is it a?

kc_kennylau · Answer

no :/

kc_kennylau · Answer

Do the thing inside the bracket first, ignore the things outside it

agent0smith · Answer

9^3 is not 3^3

kittiwitti1 · Answer

Last one's correct.$$3^4=81,~3^9=19683~and~9^3=729$$ Only the last one has the correct value in the first step.

kittiwitti1 · Answer

@kc_kennylau Actually no I was struggling to make my stupid pocket scientific calculator work while typing out LaTex code .-.

kc_kennylau · Answer

@kittiwitti1 oh lol your calc is stupid indeed (not you :P)

kittiwitti1 · Answer

lol yep @kc_kennylau 
It has no exponent/carrot button, can you believe that?

lena772 · Answer

So it's D?

kittiwitti1 · Answer

What do you think (No offense intended by that)?

lena772 · Answer

Isn't 27^1/3 =9 not 3

lena772 · Answer

My two thoughts were A and C, but you guys say it's not A... so C would be my next choice

agent0smith · Answer

No, it isn't.

agent0smith · Answer

A power of 1/3 means a cube root. What is 9 cubed? it's 9 x 9 x 9 which is far larger than 27.

lena772 · Answer

Oh... ok... so why wouldn't it be B

kittiwitti1 · Answer

What's 3 to the 9th power?

agent0smith · Answer

3^9 is 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3. Again, far bigger than 27.

lena772 · Answer

Ok

agent0smith · Answer

3^3 is 3 x 3 x 3 =27

agent0smith · Answer

Use a calculator if you aren't sure... try out some of these yourself.

lena772 · Answer

I understand now, thanks everyone.