Answer: 8.42 x 10^2
Step-by-step explanation: (8 x 109) - (3 x 10) = 842
Scientific Notation has to be between 1 -10 so the it has to be 8.42 and
8.42 x 100 = 842 and 10 x 10 = 100 so you'd need 10^2 which makes the answer 8.42 x 10^2.
Answer:
The answer is 842
Step-by-step explanation:
8.42 X 10^2=842
