solving of linear equations in two variales by addition, Algebra

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7x-4y=19;17x-2y=-31

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Skill practice lesson 3.5 quadratic formula, 4x^2+8x-16=0

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in her last gymnastics competition Keri scored a 5.6 on the floor exercise, 5.85 on the vault and 5.90 on the balance beam. what was keri''s total?

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in the year 2000, radio stations numbered 220. The number of stations has since increased by approximatly 14.3% per year. Let x represent the number of years since 2000,and y repre

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Simplify the expression, -(1-5n)-7n

-(1-5n)-7n

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