To walk to her friend's house, Cristal normally walks 63 yards north and 16 yards east as shown. How many yards shorter would it be if Julie took the diagonal shortcut, x?

Answers; a) 135 degree’s b) 30 degree’s c) 180 or 0 degree’s d) 90 degree’s

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?

Simplify the given expression leaving the answer in improper fraction form. 2/3+5/6