Question

sort the words according to the meanings of their shared roots.
septet conjoin septuagenarian
septuple communicate complex
seven together

Explanation:

Words are grouped by their Latin/Greek roots:

1. Root sept- (meaning "seven"):

• septet: a group of seven performers/items
• septuagenarian: a person aged 70-79
• septuple: seven times a number/amount

1. Root com-/con- (meaning "together"):

• conjoin: to join together
• communicate: to share information together
• complex: made of parts woven together

Answer:

seven

septet
septuagenarian
septuple

together

conjoin
communicate
complex