What is the reciprocal of 1/6

a.6/6

b.2/6

c.1/6

d.6

What situation is an example of an observational study

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.