10 Is what percent of 60

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog