Determine o valor das seguintes expressões.
a) (17º-17'-17") : 4
b) (18º: 8 + 23º: 4 - 8º) . 29

Solve the inequality, then identify the graph of the solution. 2x – 1 > x + 2

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126