You have a set of 21 songs. How many different groups of 17 could you make?

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

Aplane intersects a pris paralel to the base of the prism. the cross section is a polygon wth eight sides. how many sides does the base of the prism have? a. 10 b. 8 c. 7 d. 9

If bill bought a home for $210,000 and he sold it a year later for $120,000 his percentage of loss is