I need help this is sooo hard
8th grade math!

- anonymous

I need help this is sooo hard
8th grade math!

- Stacey Warren - Expert brainly.com

Hey! We 've verified this expert answer for you, click below to unlock the details :)

- katieb

I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!

- anonymous

it is hard, isn't it?

- anonymous

aalright haha im sure if you tae it in steps everything willl be simplar

- anonymous

What is the value of the expression \[ \frac{ 1 }{ 4^{-3}}\]

Looking for something else?

Not the answer you are looking for? Search for more explanations.

## More answers

- anonymous

alright easy lets start by looking at the problem

- anonymous

a.12
b.64
c. 1/64
d. 1/12

- anonymous

we have a 4^-3 in the denominator. what does that tell you?

- anonymous

Its either a or b

- anonymous

umm idk

- anonymous

lets not worry about the answer right now lets worry about the problem itself

- anonymous

alright i will let you know a nice rule. when you bring a number from the denominator to the numerator you slip the exponent

- anonymous

so something like 1/5^-2 = 5^2

- anonymous

do you understand?

- anonymous

no

- anonymous

ok thats fine. its just a rule. i just want to make sure you know 5^2 is 5 squared

- anonymous

do you understand that?

- anonymous

yes

- anonymous

alright cool

- anonymous

so with your problem we have 1/4^-3

- anonymous

we bring the 4^-3 to the numerator

- anonymous

and we get?....what?

- anonymous

umm

- anonymous

...

- anonymous

ok with our rule we change the sign of the exponent

- anonymous

so what is it?

- anonymous

4* -3 ???????

- anonymous

oh i see what you are confused about. when i am talking about sign i mean positive or negative

- anonymous

so all i mean by change the sign of the exponent is change it from -3 to 3

- anonymous

so you have just 4^3

- anonymous

now what is 4 to the power of 3?

- anonymous

Its 64!

- anonymous

tysm for helping me!

- anonymous

you are welcome please look over notes on this

- anonymous

its essential on later math problems you will have i highschool

- anonymous

SO happy!

##### 1 Attachment

- anonymous

im in the us

- anonymous

well i mean like algebra and pre calc it makes things easier if you know basic stuff like this

Looking for something else?

Not the answer you are looking for? Search for more explanations.