(1.7 ∙ 10–4)(5 ∙ 10–5)

Question

A. 8.5 ∙ 10–9
B. 8.5 ∙ 1020
C. 6.7 ∙ 10–9
D. 6.7 ∙ 1020

Answer 1

The answer is:

(1.7 ∙ 10–4)(5 ∙ 10–5) = 8.5 ∙ 10–9

Therefore, the correct option is A. 8.5 ∙ 10–9.