Question

how is 0.00023 written in scientific notation? a. 23 x 10–5 b. 2.3 x 10–4 c. 2.3 x 104 d. 0.23 x 10–3

Answer 1

Answer: $2.3\times10^{-4}$

Step-by-step explanation:

We know that Scientific notation is a way to write a very large or a very small number in the product of a decimal form of number [generally between 1 and 10] and powers of ten.

Given number : 0.00023

In scientific notation $0.00023=2.3\times\frac{1}{10000}=2.3\times10^{-4}$

Therefore, In scientific notation  $0.00023=2.3\times10^{-4}$

Answer 2

0.00023

Move the decimal point to the right, so it stops between 2 and 3, and the power of 10 becomes negative.

= 2.3 * 10⁻⁴

Option b.

I hope this helps.