If 2x +y=8, x+2y=4, find the value of x-y.
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Suppose that 15 inches of wire cost 60 cents. at the same rate, how much (in cents) will 12 inches of wire cost
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Agrasshopper weighs 0.89 grams. express the grasshopper’s weight in scientific notation.
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If two lines form congruent alternate interior angles with a transversal, then the lines
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