Please need help thank you

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

What is the solution set of the quadratic inequality x^2-5< or equal to 0

The product of sin 30 degrees and sin 60 degrees is same as the product of