solve the following inequality express in interval notation?

1 ⤊

3|x+4|-4>_20

2007-04-23 06:04:59 · 2 answers · asked by marcus r 1 in Science & Mathematics ➔ Mathematics

3|x+4|-4 >= 20
3|x+4| >= 24
|x+4| >= 8

x + 4 >= 8 OR x + 4 <= -8
x >= 4 OR x <= -12

( -infinity, -12]U[4, infinity)

2007-04-23 06:12:50 · answer #1 · answered by Mathematica 7 · 1⤊ 0⤋

3 |x + 4| > 24
| x + 4 | > 8

x + 4 > 8
x > 4

x + 4 < - 8
x < - 12

Solution is x > 4 , x < - 12

2007-04-23 06:45:56 · answer #2 · answered by Como 7 · 0⤊ 0⤋