Sarah worked for 1,200 minutes this week, what is the number of hours she worked

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.

Find the value of the variable and the length of each secant segment.

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry