At a gathering of 10 people, there are 4 people who all know each other and 6 people who know no one. People who do not know each other shake hands. How many handshakes occur?

What is the simplified form of 7 √x • 7 √x • 7 √x • 7 √x?

Awall map has a scale of 128 miles = 6 inches. the distance between springfield and lakeview is 2 feet on the map. what is the actual distance between springfield and lakeview? 384 miles 512 miles 1.13 miles 42.7 miles

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