Harkema637 Harkema637

17-07-2014
Mathematics

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which of the following expressions is equivalent to 20 - 4/5 x > (the > has a line under it) 16?

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Аноним Аноним

17-07-2014

[tex]20-\frac{4}{5}x\geq16\ \ \ \ |both\ sides\ -20\\\\-\frac{4}{5}x\geq-4\ \ \ \ |both\ sides\ :(-\frac{5}{4}) < 0\ then\ change\ "\geq"\ to\ "\leq"\\\\x\leq-4\cdot(-\frac{5}{4})\\\\x\leq5\\\\x\in(-\infty;\ 5][/tex]

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