Rectangle A'B'C'D' is a dilation of rectangle A B C D and the scale factor is 2. The perimeter of ABCD is 18 mm. The area of ABCD is 20mm. write an equation for and calculate the perimeter of A'B'C'D'. Write an equation for and calculate the area of A'B'C'D'.
The side lengths of both rectangles are whole numbers of mm. what are the side lengths of ABCD and A'B'C'D'.

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

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in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

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c. histogram

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