There are 50 students in mary's class. 27 of them are boys. what percentage of mary's class are boys?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2