I got it wrong because I’m not too good in math but help a girl out, please

Two parallel lines are crossed by a transversal.what is value of x

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?