2 years ago

Solve the inequality. |3x+7| <_ 4

Mathematics

2 answers:

weqwewe [10]2 years ago

8 0

Step-by-step explanation:

it can be written as. -4<_(3x+7)<_4

= -11 <_(3x) <_ (-3)

= (-11/3) <_ X <_ (-1)

n200080 [17]2 years ago

3 0

Answer:

Using ∣x∣>a⇒x<−a or x>a, we get

∣3x−7∣>4⇒3x−7<−4 or 3x−7>4

⇒3x<3 or 3x>11⇒x<1 or x>

⇒x∈(−∞,1)∪(

,∞).

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