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StephenCurry34
27.11.2019 •
Mathematics
Plz
25 pts with brainlest
solve |x| + 7 < 4.
{x | x < -11 or x > -3}
{x | -3 < x < 3}
ø
Solved
Show answers
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Ответ:
No solution.
You can also write this as the empty set.
The symbol for empty set is ∅.
The problem:
Solve |x|+7<4
Step-by-step explanation:
|x|+7<4
Subtract 7 on both sides to get the term containing the | | by itself:
|x|+7-7<4-7
|x|+(7-7)<4-7
Simplify:
|x|<-3
The thing is this will never happen for any x since there is no positive number less than -3. Also 0 is not less than -3. All positive numbers or 0 are greater than any given negative number.
| | will always produce a positive or 0 output.
Ответ: