For the transformation to be defined as a rotation, which
statements must be true? Select three options.

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Find the solution of this system of equation -7x+y=-20 9x-3y=36