3. Length of a cubic container is 20 cm .A cube with a length of edges 5 cm will be used to take some water from a water barrel.
1 answer:
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Answer:
x < - or x > 2
Step-by-step explanation:
inequalities of the form | x | > a always have solutions of the form
x < - a or x > a, hence
5x - 4 < - 6 or 5x - 4 > 6 ( add 4 to both sides in both inequalities )
5x < - 2 or 5x > 10 ( divide both sides by 5 in both inequalities )
x < - or x > 2
The solutions can be expressed in interval notation as
x ∈ (- ∞, - ) ∪ (2, ∞ )