When written in standard form, which number is greater than 0.0125?
1. 1.25x10^-4
2. 2.15x10^-2
3. 1.23x10^-2
4. 2.15x10^-3
To compare the numbers, we need to convert them all to standard form.
1. 1.25x10^-4 can be written as 0.000125 in standard form.
2. 2.15x10^-2 can be written as 0.0215 in standard form.
3. 1.23x10^-2 can be written as 0.0123 in standard form.
4. 2.15x10^-3 can be written as 0.00215 in standard form.
Comparing the numbers, we can see that 0.0215 (2.15x10^-2) is greater than 0.0125.
Therefore, the answer is option 2: 2.15x10^-2.