78840hours 4730400mins 283824000secs old
Yes, if that person is responsible, mature and has experience.
Never.
No and it is illegal. This is a minor child and the person who is involved with a 9 year old can be charged with child sexual abuse if they are an adult.
Personally, I think that it is okay to date someone that is younger than you. Even by more than 3 years. As long as you have feelings for this person and you really like them. I used to know someone who was a 15 year old kid and was dating a 9 year old. As long as you really like them.
This should take a 9-12 year old to run a mile is 6-9 min.
Of course,as long as the parent/guardian allows the 9 year old too.
9 months
It depends on how long, and how responsible the 9 year old is. Some 9 year olds I know could handle it for a couple hours, but I also know some that i wouldn't dare leave a little kid with.
Such statistics are not recorded.
Pede
If you are 9 years old now in a 1000 years you would be 334 years old. There is not one person that has lived that long.
This all depends on how mature the 14 year old is. If you know their parents find out how they do in school. Also another key part of this is does the 9 year know this person and do they like them. one more key aspect is does the 9 year old have any allergies or need to take any medication. In my opinion i would let my 14 year stay home alone with my 8 year old, but is this 14 year old your child or is the 9 year old your child?