Christina went to the salon and had 5/8 of an inch of hair cut off. the next day she went back and asked for another 5/8 of an inch to be cut off. how much hair did she have cut off in all? simplify your answer and write it as a proper fraction or as a whole or mixed number.

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

9/10 divide by -3/15 as a mixed number

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