The coordinates of an ordered pair have opposite signs in which quadrant(s) must the ordered pair lie. explain

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Solve the equation by completing the square. x^2+2x=17