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If find each measure.
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Aline is perpendicular to another line m2= (-1/m1), where m1 is the slope of the original line and m2 is the slope of the perpendicular line. which of the following equations represents the line that passes through the point (-2,1) and is perpendicular to the line below?

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25

Three lines meet at a point. set up and solve an equation to find the value of (a) is your answer reasonable? explain how you know