Question

maria is helping label microscope slides in a science lab. one slide is labeled 4.5×10⁻⁵ meters. she wants to understand what this means and whether the label is correct. question 1 what does 4.5×10⁻⁵ represent? 0.00000045 a small number, much less than 1 a large number greater than 10000 45000 question 2

Explanation:

Step1: Recall scientific - notation rule

A number in scientific notation $a\times10^{n}$ where $1\leqslant a<10$ and $n$ is an integer. When $n < 0$, we move the decimal point $|n|$ places to the left. For $4.5\times10^{- 5}$, we move the decimal point 5 places to the left. So $4.5\times10^{-5}=0.000045$. This number is much less than 1.

Answer:

B. A small number, much less than 1