Question

Express 5.09 ×10^-4 in standard form.

Answer 1

It's in scientific notation >>> 5.09 × 10⁻⁴ <<<

10^-4 negative number means: the decimal point has to move to the left, 4 decimal places.

Result: 0.000509 (standard form)

I hope this helps! :)

Answer 2

.000509.

when to is to a negative power move the decimal that many places to the left