In general, what are three ways in which minerals form?

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?

Arational number that is equivalent to -20/4?