For #11 you add 54 + 59+ 57+ 54. Then you have 224. Then divide 224 by 4 since there are 4 numbers. Your answer should be 56 inches as the average, or mean.
Remember, when you divide, you divide by the number of all the numbers. I'm trying to make sense but hope this helps!
A is 5,6 that is the answer for A gotta go but maybe someone else can help with the other ones
There is no ones place after the decimal so 3 is in the tenth place, so 2.4
