Answer:
There are 4 significant figures.
Step-by-step explanation:
- Any zeros that come before any non-zero number are never significant.
- Zeros that are in between any non-zero numbers are always significant.
- Zeros that come after any non-zero are ONLY significant is there is a decimal point present. (In this case, there is.)
The significant figures are underlined :
0 . 0 9 0 5 0