Question

I’m not sure about the answer to these 2 questions, pls provide a step by step explanation if possible, it’s ok if not

Answer 1

2*10^4= 20000

Explanation:

Divide 8.4 by 4.2 and multiply that by 10^7 divided by 10^3

8.4/4.2 = 2

10^7/10^3 =

10^4

Multiply them together:

2*10^4 = 20000