Can someone solve this for me? or explain it at you don't have to give a full detailed answer, i just need simple answers as a guide to this cause i'm really stuck. i'll give brainliest and 20 points..

So you add all of the numbers of books owned by each student then divide it by 8, after you get the result you subtract the total by the number of books of each student individually (and if you get a negative it will be positive) then after you finish subtracting all 8 students book total you add up the numbers together and then you divide by 8 again and you get your mean.. hope this helped

A) To find the mean you have to add all of the values together and divide it by the total number of values. So, 8+9+9+7+8+6+9+8=64 ---> there are 8 numbers> 64/8=8> the mean is 8.
(B) Take each number and subtract it by the mean. For example 7-8= -1. Then take the absolute value of that number. For example. l7-8l= 1. Do that for every number. Add the differences together. 0+1+1+1+0+2+1+0=6. Divide the sum by the number of values added. 6/8= .75  This is the mean absolute value deviation.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.