100 Points! And brainiest. Please help. I don't have a lot of time!

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.

Using the information in the customer order, determine the length and width of the garden. enter the dimensions. length: feet width: feet

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?