On april 11, 2012, two earthquakes were measured off the northwest coast of sumatra. the first had a magnitude of 8.6. the second had a magnitude of 8.2. by what approximate factor was the intensity of the first earthquake greater than the intensity of the second earthquake?

0.40
1.02
1.05
2.51

Option D. 2.51 is correct.

Step-by-step explanation:

Magnitude of first earthquake = 8.6

Let intensity of first earthquake be x

Magnitude of second earthquake = 8.2

Let intensity of second earthquake be y

Now, to find the factor by which intensity of first earthquake is greater than intensity of second : we divide equation (1) by equation (2)

Hence the required factor is 2.51

Therefore, Option D. 2.51 is correct.

sine

step-by-step explanation: