Question

Question is in the pic

Answer 1

50x30x9x70jssjgsvebdghxhdbgd

Answer 2

Explanation:

(5 * 10³) * (9*10⁷) = 5*9 * 10³⁺⁷

= 45 * 10¹⁰

= 4.5 * 10¹¹

(7*10⁵)÷ (2*10²) =

`(7)/(2)*10^(5-2)\\\\=3.5*10^(3)`