Which of the following is 2/11 closest too?

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

If sin(x) = 0 and cos(x) = 1, what is tan(x)?