Prove that x 2 + y2 - 1 is irreducible in q[ x, y].

Ineed if you could explain and give me the answer you! this needs done

Plz a. s. a. p.the table shows the number of male and female contestants who did not win a prize. what is the probability that a randomly selected contestant won a prize, given that the contestant was female? write the probability as a percent. round to the neares tenth, if needed.

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?