Question

(3.8 * 10 ^ 3) * (9.4 * 10 ^-5)

Answer 1

1) Calculating that expression:

Let's first multiply the numbers before the power:

2) 3.8 x 9.4 =35.72

$\begin{gathered} (3.8\cdot10^3)\cdot\text{ (9.4 }\cdot10^{-5}) \\ 35.72\cdot10^{-2} \\ 3.572\cdot10^{-3} \\ \end{gathered}$

Then, we need to repeat the base (10) and add the exponents (3 + -5 = -2.

Let's adjust the to the scientific notation form, so let's move the dot to the left one place, so we'll end up with

3.572 x 10^-3