Maths Questions..who answers first will get brainliest. I am being timed.. Divide. 6÷ 2/3
Add 3 hours 40 minutes and 2 hours 50 minutes
Convert 720 minutes into hours and minutes
7 hours 35 mins before 7:20 p. m.
School’s founders' day was on 21 November. Practice started 45 days before. When did it start?
Arun returned from his 21 days holiday on 10 th July. When did his holiday begin?

1. 9

2. 6 hours 30 minutes

3.  12 hours

4. 11:45am

5. October 7th

6. june 19th

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this