What is the number 7.3 x 10^-8 written in decimal notation?
A. 0.00000007.3
B. 730,000,000
C. 0.000000073
D. 0.0000000073
The number 7.3 x 10^-8 written in decimal notation is 0.000000073.
Therefore, the correct answer is C. 0.000000073.
To convert 7.3 x 10^-8 into decimal notation, we move the decimal point 8 places to the left because the exponent is negative.
Therefore, the answer is:
C. 0.000000073
To convert a number written in scientific notation, such as 7.3 x 10^-8, into decimal notation, we need to move the decimal point to the right or left based on the exponent.
In this case, the exponent is -8, which means we need to move the decimal point 8 places to the left.
Starting with 7.3, we move the decimal point 8 times to the left:
0.000000073
So the number 7.3 x 10^-8 is written as 0.000000073 in decimal notation.
Therefore, the correct answer is C. 0.000000073.