Can you guys help me fill the right angle measures

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?

Find the value of the variable and the length of each chord for #5 and #6.

Asequence of transformations maps aabc to aa'bc. the sequence of transformations that maps abc to aa'b'c' is a reflection across the followed by a translation