Solve the Compound inequality.
3x + 7 > 10 or - 2x > 4
15 < 5x < 25
-0.3 < 0.2x + 0.5 < 0.9
-3x + 1 < -11 or 5x + 2 < 7
2007-11-06 10:48:58 · 13 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
1. 3x + 7 > 10 or - 2x > 4
<=> 3x > 3 or -2x > 4
<=> x > 1 or x < -2
solution set is (-∞, -2) ∪ (1, ∞)
2. 15 < 5x < 25
<=> 3 < x < 5
solution set is (3, 5)
3. -0.3 < 0.2x + 0.5 < 0.9
<=> -0.8 < 0.2x < 0.4
<=> -4 < x < 2
solution set is (-4, 2)
4. -3x + 1 < -11 or 5x + 2 < 7
<=> -3x < -12 or 5x < 5
<=> x > 4 or x < 1
solution set is (-∞, 1) ∪ (4, ∞)
2007-11-06 10:58:50 · answer #1 · answered by Scarlet Manuka 7 · 0⤊ 0⤋
X=3
2007-11-06 10:51:35 · answer #2 · answered by Anonymous · 0⤊ 1⤋
3x + 7 > 10 or -2x > 4
-7 -7 /-2 /-2
3x > 3 or x > -2
/3 /3
x > 1 x > -2
now fill x in with the equivelent
3*1+7>10 or -2*-2>4
http://www.algebra.com/services/rendering/simplifier.mpl
2007-11-06 10:58:54 · answer #3 · answered by hzleyes 4 · 0⤊ 0⤋
18
2007-11-06 10:51:03 · answer #4 · answered by John P 2 · 0⤊ 1⤋
the x's are 3 so 18
2007-11-06 10:52:09 · answer #5 · answered by Anonymous · 0⤊ 1⤋
the answer is 18 becuse 21 25 06 17 equals 18
2007-11-06 10:52:24 · answer #6 · answered by Teena 2 · 0⤊ 1⤋
Number 1.) 5x > 11
Number 2.) 25 > 20x
Number 3.) -0.1x < 0.9
Number 4.) -2x < 7
2007-11-06 10:52:59 · answer #7 · answered by Anne 3 · 0⤊ 2⤋
3 sheep and a shepard
2007-11-06 10:52:27 · answer #8 · answered by Anonymous · 0⤊ 1⤋
1 What kind of points?
2007-11-06 10:52:12 · answer #9 · answered by damron 3 · 0⤊ 1⤋
If I leave my username you ask me again because I need
to think
user-name:wiggletom
2007-11-06 10:52:07 · answer #10 · answered by Anonymous · 0⤊ 1⤋