The ratio of men to women at a lecture is 2 to 5. a total of 63 people are at the lecture. how many are men? show your work.

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Lena reflected this figure across the x-axis. she writes the vertices of the image as a'(−2, 8), b'(−5, 6), c'(−8, 8), d'(−4, 2).

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective