Circle t is shown. line segments t s, t r, t q, and t p are radii. lines are drawn to connect points s and r and points p and q to form secants. angles r t s and q t p are congruent.
what is true regarding two adjacent arcs created by two intersecting diameters?

they always have equal measures.
the difference of their measures is 90°.
the sum of their measures is 180°.
their measures cannot be equal.

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.