Which of the following are the correct properties of slope?

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

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?