Answer:
Step-by-step explanation:
Given
Required
Express in terms of and
Express 21 as 7 * 3
Apply law of logarithm
. So, we have:
Rewrite:
Answer:
0.0000016
Step-by-step explanation:
(8×10^-3)×(2×10^-4)
=8×10^-3 × 2×10^-4
= (8×2) × (10^-3 × 10^-4)
=16 × 10^(-3) + (-4)
= 16 × 10^ (-3-4)
=16× 10^(-7)
= 0.0000016