Question

What is 0.00045 in scientific notation. 8th grade.

A) 4.5 x 10^⁻4
B) 4.5 x 10^⁻3
C) 45 x 10^⁻5
D) 45 x 10^⁻4

Answer 1

0.00045 can be written in scientific notation as 4.5 x 10^-4.

Step-by-step explanation:

0.00045 can be written in scientific notation as 4.5 x 10-4. In scientific notation, the number is represented as the product of a number between 1 and 10 and a power of 10. The exponent indicates the number of places the decimal point needs to be moved to obtain the original number. In this case, the decimal point is moved 4 places to the left, resulting in a negative exponent of -4.