Which of these is the same as 3/5 divided 4/7
a 3/5 divided 7/4
b 4/7 divided 3/5
c 3/5 multiply 4/7
d 3/5 multiply 7/4

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

If you answer right ill give brainliest, : )

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