mean is the same thing as average. Add up all terms, and divide by the number of terms.
if there 3 terms of x, y, and z, the mean or average is \(\dfrac{x+y+z}{3}\).
Um...I don't see any three digit numbers in the set {2, 0, 1, 9}. I only see single-digit numbers.
No problem! I try to help when I can!
Why is mine the best answer? I forgot to explain, and your answer, CPhill, explained everything clearly and brilliantly. I give CPhill's answer the title of Best Answer.
Wait for someone else's answer to confirm. I am not 100% sure.
\(-\dfrac{2}{5}\)
- PM
A) h>= 0
The height cannot be greater or equal to 0, then how can it be in the air for 4 seconds? (C)
The ball could travel faster than 1 foot per second, so the height does not have to be in between 0 and 4 (B) same with (D)
Math allows people to count how many berries are on a tree. (At least for ancient cavemen)
IDK
+777 
