Round the mixed number to the nearest whole or half. 11 5/6

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

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab