Question

Please help will fan and give a medal
What is the value of the expression 7^-3
A. -21
b.-1/343
c.1/343
d.343
btw -3 is a exponet

Answer 1

\[7^{-3} = \frac{ 1 }{ 7^{3} }\]

Answer 2

that's a rule when it comes to negative exponents

Answer 3

ok thank you but im still confused

Answer 4

what's confusing you ?

Answer 5

o ok so the answer is d?

Answer 6

im not exactly sure what im confused about but I just took a quiz on it an mad a 60%

Answer 7

ok

let's say we have 7^ 3

that's 7 x 7 x7 right ?

Answer 8

yea

Answer 9

okay when you have a negative exponent it's

\[\frac{ 1 }{ 7 x7 x7 }\]

Answer 10

the xs are meant to be times sorry about that

Answer 11

so the answer is 343 because 7*7*7 is 343

Answer 12

no that answer isn't 343

your question says 7^-3

meaning 7 to the power of negative 3

Answer 13

o ok

Answer 14

if your question was 7 to the power of 3 ( as in positive three) the answer would be 343

let me say it in another way


positive exponents :

eg. 3^2 = 3 x 3

negative exponents :

eg. 3^-2 = \[1\div3\div3\]

in other words \[\frac{ 1 }{ 3\times3 }\]

Answer 15

does that make sense?

Answer 16

yes thank you sooo much for ur help

Answer 17

got the answer ?

Answer 18

b I think