How are 15/40 equal to 3/8? how are 18/30 equal to 6/10 ?
How are 48 equal to 12/16?
How are 2/7 equal to 18/63

Question 5 spring semester final exam math evaluate

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

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?