Question

what is 221,000,000,000,000,000,000 expressed in scientific notation?

2.21 × 1021
2.21E20
2.21E21
2.21E-20
2.21 × 10-21
2.21 × 10-20
2.21 × 1020
2.21E-21

Answer 1

Answer:

the answer is 2.21E20

Step-by-step explanation:

option b is correct

Answer 2

Answer:

b

Step-by-step explanation: