Aposter is shown below: a rectangle is shown. the length of the rectangle is labeled 18 inches. the width of the rectangle is labeled 6 inches. what are the dimensions if the poster is enlarged by a factor of seven over two ? 42 in by 126 in 3 in by 9 in 9 in by 12 in 21 in by 63 in

63x21. The rectangles length is 63 inches and its width is 21 inches
 
because 7/2 is 3.5 so multiply both numbers by 3.5 and you get 63 and 21

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.

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