Question

Please help.
Indices and Standard Form question

Answer 1

A= 4.5×10^11

B= 3.5×10^3

Explanation:

A

(5×10^3)= 5000

(9×10^7)=90000000

multiply both of them

=450000000000 or 4.5×10^11

B

(7×10^5)=700000

(2×10^2)=200

700000÷200

3500 or 3.5×10^3