Point a is the pre-image of a vertex of a square and is located at (–10, 8). the square is dilated with the center of dilation at the origin. point a’ is the image and is located at (–7.5, 6). what is the scale factor of the dilation?

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

Read the equations in the table below. then drag a description of the situation and a table to represent each equation. indicate whether each of the relationships is proportional or non-proportional.

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?