In this diagram, which equation could you prove to be true in order to conclude that the lines are parallel?

c−ab⋅de=−1
c−ab=de
c−ab=−de
c−ab⋅−de=−1

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

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin