Simply fully please

Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3

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

Def rotates 90 clockwise about point a to create d’ e’ f’. therefore, which equation must be true ?