1st option, 2nd, 4th and 5th
Answer:
SAS
Step-by-step explanation:
Hope this helps :)
Answer:
A. 10
Step-by-step explanation:
First put the numbers in order from least to greatest then find the two numbers in the center of that since there is an even number of numbers there will be two the add and divide by two and you get 10.
1,2,7,9,11,15,19,20
9+11=20
20/2=10
