Fire trucks have the word FIRE written two ways, as seen here, on the front of the truck. Why is that?
A) So people who do not read English will know what the word is.
B) So someone seeing the print in their car mirror can read the word.
C) To let people in front of and behind the fire truck read the word.
Eliminate
D) So people approaching the truck and passing the truck can read the word.

the answer is a 3.8cm

explanation:

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day