John shared a 12 slice pizza equally with two of his friends after his friend ate their share he ate two thirds of his chair what fraction of the pizza is still left

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.

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

I’m really confused and need to learn this