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Is -24 a solution to the equation -16+2x=-64

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²