Question

Jenna calculated several numbers in her calculator. The result displayed 1.8E-4 on the calculator screen. Which equivalent number(s) does this represent? Select all that apply.

-0.00018
1.8 × 10 -4
18 × 10 4
0.00018
1800

Answer 1

Step-by-step explanation:

It is given that the result displayed on the calculator screen is $1.8E 10^{-4}$. We need to say out of all options, which options represent the equivalent number.

$1.8\times 10^{-4}=\dfrac{1.8}{10^4}\\\\=\dfrac{1.8}{10000}$ .....(1)

Option (2) is correct i.e. $1.8E10^{-4}=1.8\times 10^{-4}$

From eq2uation (1)

$\dfrac{1.8}{10000}=\dfrac{18}{100000}\\\\=0.00018$

Option (4) is correct.