Answer: 10 km in one hour
Step-by-step explanation:
If there are nine hours, and we need to find the distance it will cover in one hour, then we need to divide 90 by 9.
90 ÷ 9 = 10
A train covers 10 km in one hour.
Hope this helps!
Answer:
The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
Step-by-step explanation:
Answer:
Step-by-step explanation: