Alejandro says that swimming 12 laps every 8 minute is a constant speed of 2/3 laps per minute. is his calculated speed was correct or incorrect

Which shows the pre image of triangle xyz

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

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73