Aballoon was release and went straight up 3 miles and then the wind blew it 6 miles east. what is the balloon's diagonal back to its original starting point

Which shows the pre image of triangle xyz

This is different from the first one can someone me

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?