The angles formed by two perpendicular lines have a measure of a.45° b.90° c.135° d.180° in ☺

Simplify the expression 10/11(22z) + (a+5) -1

Angela took a general public aptitude test and scored in the 88th percentile for aptitude in accounting. what percentage of the scores were at or below her score?

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.