Which of the following expressions is 0.00012 written in scientific notation?

* 1.2 × 10 -4
* .12 × 10 -3
* 1.2 × 10 4
* 12 × 10 -5

Step-by-step explanation:

the following expressions is 0.00012 , write it in scientific notation

In scientific notation we put the decimal point after the first number

to get the decimal point after 1, we move 4 units to the right

To move 4 units to the right , we put

Scientific notation is

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x

fd

step-by-step explanation: