Find the center and the radius of the given circle. (x - 15)2 + (y + 15)2 = 57
center:
radius:

Which statements about these triangles is true

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?

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.