What is the value of the expression 3–4?
A.
–81
B.
–12
C.
– 1/81
D.
1/81

- anonymous

What is the value of the expression 3–4?
A.
–81
B.
–12
C.
– 1/81
D.
1/81

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- katieb

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- anonymous

@radar
@Nnesha

- Nnesha

exponent rule \[\huge\rm x^{-m}=\frac{ 1 }{ x^m }\]

- DanJS

3^(-4)

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## More answers

- anonymous

ok @Nnesha i have no time to explane plz give me answer plz i cant do this

- anonymous

and yes

- Nnesha

how do you know you `can't` do this

- Nnesha

this is the easy topic in math

- Nnesha

flip the fraction when you do that sign of exponent would change

- Nnesha

here is an example \[\huge\rm 2^{-2} = \frac{ 1 }{ 2^2 }\]

- anonymous

ok

- Nnesha

so \[3^{-4} =?\]

- anonymous

1/18?

- Nnesha

18 ?

- anonymous

?\[\frac{ 1 }{ 18 }\]

- Nnesha

not 18
3^4 is same as 3 times 3 times 3 times 3
which isn't equal to 18

- Nnesha

\[\frac{ 1 }{ 3 \times 3 \times 3 \times 3}\]

- anonymous

ok so -1/18?

- anonymous

A.
–81
B.
–12
C.
– 1/18
D.
1/18

- Nnesha

3 times 3 times 3 times 3 = ??

- anonymous

12

- Nnesha

i'm serious.

- Nnesha

http://prntscr.com/8biwdt these are answer choices

- anonymous

yea

- mathstudent55

To raise a number to a negative power, first, ignore the negative and just raise the number to the positive exponent. Then write 1 over the number.
Examples:
\(5^{-3} \) start with \(5^3 = 125\). Now write 1 over that. Answer \(\dfrac{ 1}{125} \)
\(6^{-2}\) start with \(6^2 = 36\). Now write 1 over the number. Answer \(\dfrac{1}{36} \)

- Nnesha

so 3 times 3 times 3 times 3 = what ?

- anonymous

it is 81

- anonymous

ok

- Nnesha

yes right!!! so \[\frac{ 1 }{ 3 \times 3 \times 3 \times 3 }=\frac{ 1 }{ 81 }\]
not 1/18

- anonymous

ok so what next

- anonymous

plz

- Nnesha

that's it1

- anonymous

ok and?

- anonymous

what is answewr?

- anonymous

er

- Nnesha

seriously ?

- anonymous

im just so furoustrated plz

- Nnesha

reread my comments

- anonymous

i did

- anonymous

lol, he has a slow streak

- Nnesha

so what's the answer ?

- anonymous

1

- anonymous

but

- anonymous

t

- anonymous

it

- anonymous

is

- anonymous

not

- anonymous

on

- anonymous

my

- anonymous

don't give him the answer if he is this lazy.

- Nnesha

one is not answer pay attention reread my comments

- Nnesha

like seriously ?

- anonymous

ok

- anonymous

plz

- Nnesha

I said read my comments again

- anonymous

This guy is hopeless

- anonymous

1/81

- Nnesha

yes!

- anonymous

shut up @MMAguy

- Nnesha

thank you thank you!

- anonymous

math is hard fo me

- anonymous

do your own homework @shadybubba

- anonymous

hes kinda right

- Nnesha

when you don't put an effort then definitely it's hard

- Nnesha

good luck!

- anonymous

Nnesha such a hottie!

- anonymous

waaaaaaaat?

- anonymous

just help me

- anonymous

no, you won't even help yourself.

- anonymous

@Nnesha,@MMAguy likes you

- Nnesha

\(\color{blue}{\text{Originally Posted by}}\) @shadybubba
just help me
\(\color{blue}{\text{End of Quote}}\)
you got the answer for this question right!

- anonymous

lawl @please_help_me

- anonymous

:D

- anonymous

lololol

- anonymous

so answer is 1/18?

- Nnesha

don't spam!

- anonymous

81

- Nnesha

1/81 not 18

- anonymous

goodnes gracious look up and all see the answer!

- anonymous

*u'll

- anonymous

thx @Nnesha

- Nnesha

you're welcome

- anonymous

@MMAguy you were right

- anonymous

about what? @please_help_me

- anonymous

when you said: Nnesha such a hottie!

- anonymous

jk lol

- anonymous

lol

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