Could somebody give me step by step on how to do this please

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

The median for the given set of six ordered data values is 29.5 9 12 25 __ 41 48 what is the missing value?