Question

question
convert 4500 to scientific notation with two significant figures.
answer
4.5×10³
4.5×10⁴
4.5×10²
0.45×10⁴
i dont know yet

Explanation:

Step1: Recall scientific - notation form

Scientific notation is of the form $a\times10^{n}$, where $1\leq a < 10$ and $n$ is an integer.

Step2: Rewrite 4500

We can write 4500 as $4.5\times1000$.

Step3: Express 1000 as a power of 10

Since $1000 = 10^{3}$, then $4500=4.5\times10^{3}$. And 4.5 has two significant figures.

Answer:

$4.5\times10^{3}$