Grade 9 math
I need help
Earthquakes emit both primary and secondary waves at the same time...
![subject](/tpl/images/cats/mat.png)
Mathematics, 18.01.2022 14:00 olgapagan1010
Grade 9 math
I need help
Earthquakes emit both primary and secondary waves at the same time. The primary wave travels at about 8 km/s and the secondary wave travels at about 4.8 km/s. Scientists can estimate the distance to an earthquake by measuring the time difference between the arrival of the two waves. If the time difference between the measured earthquakes is 10 seconds, how far are the earthquakes?
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:40
Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?
Answers: 1
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:40
B. two events are dependent if the occurrence of one event changes to occurrence of the second event. true or false
Answers: 2
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 22.01.2020 22:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/fizika.png)
Physics, 22.01.2020 22:31
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/User.png)
Engineering, 22.01.2020 22:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 22.01.2020 22:31
![question](/tpl/images/cats/en.png)
English, 22.01.2020 22:31
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/health.png)
Health, 22.01.2020 22:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.01.2020 22:31
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 22.01.2020 22:31
![question](/tpl/images/cats/mat.png)
Mathematics, 22.01.2020 22:31
![question](/tpl/images/cats/istoriya.png)
History, 22.01.2020 22:31
![question](/tpl/images/cats/en.png)
English, 22.01.2020 22:31
![question](/tpl/images/cats/en.png)