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The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?
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Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?
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4. Find the quotient. -7 ÷ 14/3...
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