Question

Multiply (2.0 ⋅ 10^−4) ⋅ (3.1 ⋅ 10^−20). Express the answer in scientific notation.

6.2 ⋅ 10^−80
6.2 ⋅ 10^−24
6.2 ⋅ 10^24
6.2 ⋅ 10^80

Answer 1

@Legends

Answer 2

@Nnesha

Answer 3

@undeadknight26

Answer 4

When multiplying powers to the same base, you need to add the indices. For example:
\[\large (1.5\times10^{-2})\times(2.1\times10^{-7})=3.15\times10^{-9}\]