Triangle LMN is dilated with respect to the origin to produce triangle L'MN'. Which is the scale factor of the dilation?

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

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

What is the angle measure, or angle of depression, between this bird and the bird watcher?