What is the number 7.3×10^−8

Question

written in decimal notation?(1 point)
Responses:

730,000,000
730,000,000

0.00000007.3
0.00000007.3

0.000000073
0.000000073

0.0000000073

Answer 1

To convert the number \( 7.3 \times 10^{-8} \) into decimal notation, move the decimal point in the number 7.3 eight places to the left.

Here’s how that looks:

1. Start with 7.3.
2. Moving the decimal point eight places left:
   • After moving 1 place: 0.73
   • After moving 2 places: 0.073
   • After moving 3 places: 0.0073
   • After moving 4 places: 0.00073
   • After moving 5 places: 0.000073
   • After moving 6 places: 0.0000073
   • After moving 7 places: 0.00000073
   • After moving 8 places: 0.000000073

So, \( 7.3 \times 10^{-8} \) in decimal notation is \( 0.000000073 \).

Therefore, the correct response is:

0.000000073.