What is the number 7.3 x 10^-8 written in decimal notation?

The number 7.3 x 10^-8 written in decimal notation is 0.000000073.

To convert a number written in scientific notation to decimal notation, you need to multiply the numerical value (7.3) by the power of 10 (-8).

7.3 multiplied by 10 raised to the power of -8:
7.3 x 10^-8

Multiplying 7.3 by 10 raised to the power of -8:
7.3 x (1 ÷ 10^8)

Dividing 1 by 10 raised to the power of 8:
7.3 ÷ 10^8

Calculating the final answer:
0.000000073

To convert a number in scientific notation to decimal notation, you need to move the decimal point to the right or left depending on the exponent.

In this case, the number is 7.3 x 10^-8.

To convert it to decimal notation, you will move the decimal point 8 places to the left because the exponent is negative.

Starting with 7.3, move the decimal point 8 places to the left:

0.000000073

So, the number 7.3 x 10^-8 in decimal notation is 0.000000073.