Answer:
6.4 ×10raise to power 5
Step-by-step explanation:
it is times 10 raise to power 5 because the moved the decimal point 5 times
6.4 ×10000= 6.4×10⁴×10¹
=6.4×10 raise to power 4+1
=6.4×10 raise to power of 5
