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faithtuell faithtuell
  • 15-02-2017
  • Mathematics
Answered

4d+15less then or = to -1

Verified Answer :

Noellehope Noellehope
  • 15-02-2017

4d + 15d ≤ -1 : ∑ Solution: Interval Notation: ( d ≤ -4
                                                                         -∞, -4 ]
Steps
4d + 15 ≤  -1
-----------------
Subtract 15 from both sides
4d + 15 -15 ≤  -1 - 15
Refine
4d ≤ -16
Divide both sides by 4
4d/4 ≤  -16/4
Refine
d ≤ -4

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