anderroth24
anderroth24
14-09-2017
Mathematics
contestada
Solve the inequality. |2k + 1| ≥ 5
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mreijepatmat
mreijepatmat
14-09-2017
if you remove the absolute value of |2k+1| ≥ 5, you will get:
a) 2k+1 ≥ 5 and b) 2k+1≤ - 5. (for the negative , you flip the inequality sign)
Hence
a) 2k+1 ≥ 52 → k≥5-1 and k≥ 2 And
b) 2k+1 ≤ - 5 → k≤ - 5- 1 and k ≤ - 3
Then -3 ≥ k ≥ 2
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