Question

An earthquake registered 7.4 on the Richter scale. If the reference intensity of this quake was 2.0 × 10^11, what was its intensity?

Answer 1

so 2.0x10^11 corrrespond to 1 in the scale?

Answer 2

Mmhm

Answer 3

i think it is
so that is a proportion problem

Answer 4

if 2.0x10^11 corrrespond to 1 in the scale?
x correspond to 7.4
\[\frac{ 2.0x10^(11)}{ x } =\frac{ 1 }{ 7.4 }\]