The salaries of 8 staff members at Houston Regional Hospital are shown in the chart below. Determine the mean deviation of the salaries shown below.

Three coins are flipped. what is the probability that there will be at least two tails?

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.