60% of a museum’s fossils are from the Jurassic Period. If the number of fossils from the Jurassic period is 15, what is the total number of fossils at the museum?

What is the shape of the height and weight distribution

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.

How do you solve a question like this?