Respuesta :

Answer:  10

============================================

Work Shown:

First add up all the ages

9+13+9+10+10+9+10+10+11+9 = 100

Then divide that sum by 10, since there are 10 values we added up

100/10 = 10

The average age is 10 years old.

Answer:

10 years

Step-by-step explanation:

Add them all up and divide it by 10 because there are 10 swimmers

add them all up; should equal 100 divide by 10

Otras preguntas