Answer:
1.5 because it is the average of the two middle numbers in this scenario.
Answer: 13
Step-by-step explanation: Alright with the median you take all the numbers "11, 20, 17, 8, 8, 9, 20, 13, 21" and put them in numerical order. "8, 8, 9, 11, 13, 17, 20, 20, 21" Then the middle one is the median, since there are 9 numbers you take the fifth one. In this case it is 13. (Only knew the first one since I have no idea what they mean by quartiles)
Answer:
6 8/9 , 69/10 , 6.99 , 7.927
Step-by-step explanation:


25.20/420= .06. 6% sales tax
Answer:
B) 21
Step-by-step explanation:
Write out the factorials as the full expressions of every number being multiplied.

Now cancel any numbers on the top and bottom to give:

This is simplified to

which is equal to 21