The mean score on a verbal aptitude test was 70 with a standard deviation of 5. If Jackson, Manu, Mawuli, and Abena obtained z-scores of 3.5, -2, and 2.5, -1.5 respectively on the test, what were their respective raw scores on the test?
A. 87.5, 60,57.5, and 62.5
8. 73.5, 68, 72.5, and 68.5
C. 52.5, 60, 57.5, and 62.5
D. 87.5, 60, 82.5, and 62.5​

Where’s the stuff st? ? lol sorry

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.