If a 20-foot tree casts a 40-foot shadow, how tall is a tree that casts a 48-foot shadow?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Amir wants to proportionally increase the size of a photo to create a poster for his room. the size of the original photo is shown. complete the statement and then answer the question to represent ways that amir can increase the size of his photo.

The legs of a right triangle measure 6 meters and 8 meters. what is the length of the hypotonuse.