5. which of these waves do not require a medium? sound, ocean, radio, or seismic

Your answer is radio waves.

Explanation:

There are two types of waves: Mechanical waves and Electromagnetic waves. Sound, ocean, and seismic waves are mechanical waves, because they require a medium to travel. Radio waves, however, are a form of electromagnetic waves, and therefore do not need a medium to travel. Hope this was helpful! :)

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

option number c is the right answer.