How do you write 7.21 in scientific notation?

Answer 1

7.21 x 10^0

Answer 2

To write 7.21 in scientific notation, move the decimal point to the right until there is only one non-zero digit to the left of the decimal. In this case, it would be 7.21 = 7.21 x 10^0, since the decimal point is already in the correct position.