In order to solve by completing the square, what value needs to be added to
both sides of the equation: x2 + 8x = 17? (a.8a, rc 4, rs)
a 64
b 32
c 17
d 16

can someone explain?

Determine the relationship of ab and cd given the following points

Which graph represents the given linear function 4x+2y=3

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?