Please answer ASAP.

In how many ways can groups of 8 singers be selected from 10 who came to an audition?

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?

Given: δabc, m∠1=m∠2, d∈ ac bd = dc m∠bdc = 100º find: m∠a m∠b, m∠c

Michael gose to a theme park and rides two different roller coasters that both begin on a raised platform his height while on the first roller coaster measured in feet from the platform height can be modeled by the following graph where t is the number of seconds since the ride began