Solve for the values of x and y that would make the triangle congruent by HL, assume they are right triangle

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

Which expression is rational? 6. , square root two, square root 14, square root 49

Answer asap! due in 30 minutes! ! 8th grade math