Answer:
The equation is = I = 
Step-by-step explanation:
As given ,
M - magnitude of an earthquake
I - intensity of earthquake
I₀ - intensity of a reference earthquake
The relation between the three is as follows :
M = log(
)
As given -
M = 4.8, I₀ = 1
⇒ 4.8 = log(
) = log(I)
⇒ 4.8 = log(I)
⇒I = 
So, the equation becomes I = 
What is the length of PR?
d.9 is the length
The reason is because as we have 2 triangles and 21 is divided by 3 we have proof that 27/3=9.
Hope I helped!
I don’t think there is one
Answer:
We'd need more information like the relationship between those equations.
Step-by-step explanation: