A diameter intersects a semi-circle. What is the arc measure of a semi-circle?

A)360 degrees
B)180 degrees
C)90 degrees
D)Cannot be determined

Please explain how you got your answer.

Which measurement is the most precise? a) 29 cm b) 28.8 cm eliminate c) 28.76 cm d) 28.762 cm

Which polynomial function has x intercepts -1, 0, and 2 and passes through the point (1, -6)

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.