Silicon and oxygen as the compound name is silicon dioxide
Answer: C. 1.8
Steps:
25x = 45
x = 45/25
x = 1.8
75km/hr due east
Explanation:
The velocity of the train will be 75km/hr due east.
- Velocity is given as the rate of change of displacement with time.
Velocity = 
- Velocity is a vector quantity that has both magnitude and directions.
- It is different from speed because it has the directional attribute.
- From the given data, we know that the train is moving at 75km per hour. This is the speed of the train.
- If we incorporate the direction then we have its velocity.
Learn more:
Velocity brainly.com/question/10962624
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The correct answer is C. A windstorm blew down trees in the Boundary Waters Canoe Area in Minnesota on July 4, 1999.
Explanation:
A weather event refers to a specific phenomenon in weather that in most cases is not common but particular and specific, which is different to weather patterns, this includes specific hurricanes, abnormal rain patterns, etc. Considering this, the one that is an example of a weather event is "A windstorm blew down trees in the Boundary Waters Canoe Area in Minnesota on July 4, 1999" because this is a specific phenomenon rather than a pattern in weather as int the case of hurricane seasons or permanent weather conditions.