Based on the OCR text, what are the mixed numbers listed to convert to improper fractions?

The mixed numbers listed to convert to improper fractions are: $$2\frac{3}{4}, 8\frac{1}{2}, 5\frac{2}{3}, 1\frac{6}{7}, 4\frac{4}{5}, 3\frac{9}{10}, 6\frac{5}{9}, 2\frac{7}{8}, 9\frac{1}{6}$$.