Idon't know how to do this can you plz ?

What are correct trigonometric ratios that could be used to determine the length of ln

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

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.