Answer:
OMGGGG OMGGG I NEEDTHIS QUESTION TOOOOOO
A number that is a multiple of both 2 and 5 is 10
812.30/83 = 9.78674698.....
Nearest tenth means one number under decimal place so...
812.30/83 ~ 9.8
Explanation: The 9.7... rounded up to 9.8 because the number after the tenths place (in this case the number after the 7) is greater or equal to 5.
1. is 9
and the other ones i dont really know