Toddrick has a photo album. some pages have one photo on them, and other pages have two photos on them. if toddrick has 9 photos, how many different ways can he put them in the album?

You love to play soccer! you make a shot at the net 8 times during a game! of those 8 attempts, you score twice. what percent of the time did you score?

Find the area of the regular hexagon if a side is 20 cm.

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