Question

usando apenas log 2= 0,30 e log 3= 0,47 calcule log 20

Answer 1

Olá Samara!!

$\\ \displaystyle \mathsf{\log 20 = \log (2 \cdot 10)} \\\\ \mathsf{\log 20 = \log 2 + \log 10} \\\\ \mathsf{\log 20 = 0,30 + 1} \\\\ \boxed{\mathsf{\log 20 = 1,30}}$