Professor Brown is interested to see if the graduating seniors in her sociology class have higher or lower college GPAs compared to their respective high school GPAs. Subtracting the high school GPA from the college GPA and to the nearest hundredth, what is the mean of differences

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.

Is 8.50 an answer or no? ?