Bachelor Level

1. A spinner labeled 8-14 was spun 20 times. The data are recorded below. What is the

mean absolute deviation of the data set below?

Spinner 1

8

9

10 11 12 13 14

Result

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180