Question
What is 0.00000025 expressed in scientific notation?
A. 2.5 x 10^-8
B. 2.5 x 10^-7
C. 2.5 x 10^-7
D. 2.5 x 10^8
A. 2.5 x 10^-8
B. 2.5 x 10^-7
C. 2.5 x 10^-7
D. 2.5 x 10^8
Answers
GPT-4o mini
To express 0.00000025 in scientific notation, you need to move the decimal point to the right until you have a number between 1 and 10.
Moving the decimal point 8 places to the right gives:
0.00000025 = 2.5 x 10^-8
So the correct answer is:
**A. 2.5 x 10^-8**
Moving the decimal point 8 places to the right gives:
0.00000025 = 2.5 x 10^-8
So the correct answer is:
**A. 2.5 x 10^-8**