Question

What is 0.0000009 in scientific notation?

A) 9×10−⁷
B) 9×10⁷
C) 0.9×10−⁶
D) 9×10⁶

Answer 1

The number 0.0000009 in scientific notation is expressed as 9×10^-7, corresponding to option A.

Step-by-step explanation:

The number 0.0000009 in scientific notation is 9×10-7, which corresponds to option A) 9×10-7. Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form. It is typically written in the form of a product of a number between 1 and 10 and a power of 10. To express 0.0000009 in scientific notation, you move the decimal point six places to the right and balance the shift by multiplying with 10 raised to the power of negative seven.