Question

What is the value of the expression 7 of the power –3?


–21


-1/343



1/343

343

Answer 1

First one since I'm guessing the question was 7 x -3

Answer 2

oo editted ok

=1/7^3
=1/343

Answer 3

think of \(7^{3}\)

then think of \(7^{-1}\)

\(\large 7^{3}=343\)
\(\large 7^{-1}=\frac{1}{7}\)

Answer 4

a negative exponent switches the numerator and the denominator

For example, if \(7^{-1}\) is equal to \(\large\frac{1}{7}\), this means that \(7^{1}\) was equal to \(\large\frac{7}{1}\), which is also 7.

Answer 5

so if \(7^{3}\) is equal to \(\large\frac{343}{1}\), then \(7^{-3}\) is equal to?

@cakequeen_22