Find the value of tan(arcsin(1/2))

Rose drew a regression line for this paired data set. her line passed through (1, 2) and (3, 5) . what is the equation of rose's regression line?

The length of the line segment joining the midpoints of sides ab and bc of the parallelogram abcd is 10. find the length of diagnol ac

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose