Question

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

Answer 1

it is hard, isn't it?

Answer 2

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

Answer 3

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

Answer 4

alright easy lets start by looking at the problem

Answer 5

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

Answer 6

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

Answer 7

Its either a or b

Answer 8

umm idk

Answer 9

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

Answer 10

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

Answer 11

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

Answer 12

do you understand?

Answer 13

no

Answer 14

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

Answer 15

do you understand that?

Answer 16

yes

Answer 17

alright cool

Answer 18

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

Answer 19

we bring the 4^-3 to the numerator

Answer 20

and we get?....what?

Answer 21

umm

Answer 22

...

Answer 23

ok with our rule we change the sign of the exponent

Answer 24

so what is it?

Answer 25

4* -3 ???????

Answer 26

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

Answer 27

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

Answer 28

so you have just 4^3

Answer 29

now what is 4 to the power of 3?

Answer 30

Its 64!

Answer 31

tysm for helping me!

Answer 32

you are welcome please look over notes on this

Answer 33

its essential on later math problems you will have i highschool

Answer 34

SO happy!

Answer 35

im in the us

Answer 36

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