Create a real-life situation that can be describe with the unit rate 9: 1. describe how quantities are related.

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

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.

This question awards 100 ! i really don’t want to fail i will also mark you !