Anyone 11-13 wanna be friends :D

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

You can find the constant of proportionality by finding the ratio of

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