1: Solve the inequality for x: 2x + 4 > 7
x < (3/2)
x < (11/2)
x > (3/2)
x > (11/2)
2: Solve the inequality for x: 6 – 3x ≥ 15
x ≤ -3
x ≤ 3
x ≥ -3
x ≥ 3
3: Solve the inequality for x: 3x – 4 < 2x – 1
x < -1
x < 3
x > -1
x > 3
4: Solve the inequality for x: 5x – 4 < -8
x < (-12/5)
x < (-4/5)
x > (-12/5)
x > (-4/5)
5: Solve the inequality for x: -9x – 3 > -12
x < 1
x < -1
x > 1
x > -1
2007-02-15 02:04:00 · 5 answers · asked by me1026 1 in Science & Mathematics ➔ Mathematics
ans 1.
2x + 4 > 7
=> 2x + 4 - 4 > 7 - 4
=> 2x > 3
=> x> 3/2.
ans 2.
6 - 3x >= 15
=> 6 -15 - 3x + 3x >= 15 - 15 + 3x
=> -9 >= 3x
=> -3 >= x
=> x <= -3.
ans 3.
3x - 4 < 2x -1
=> 3x - 2x - 4 + 4 < 2x -2x -1 +4
=> x < 3.
ans 4.
5x - 4 < -8
=> 5x -4 + 4 < -8 + 4
=> 5x < -4
=> x < -4/5
ans 5.
-9x - 3 > -12
=> -9x + 9x - 3 +12 > -12 + 12 + 9x
=> 9 > 9x
=>x< 1.
Bye the way did these questions really bother u or u just needed someone to do ur homework.
2007-02-15 02:23:25 · answer #1 · answered by Anonymous · 0⤊ 0⤋
1)2x+4>7
2x>3
x>(3/2)
2)6-3x⥠15
3x⤠-9
x⤠-3
3)3x-4<2x-1
x<3
4)5x-4<-8
5x<-4
x<(-4/5)
5) -9x-3>-12
9x<9
x<9
2007-02-15 02:17:29 · answer #2 · answered by Maths Rocks 4 · 0⤊ 0⤋
2x + 4 > 7
2x + (4 - 4) > (7 - 4)
2x + (0) > (3)
2x > 3
(2 / 2) x > (3 / 2)
(1) x > (3 / 2)
x > 3/2
1. x > 3/2
2. x >= -3
3. x < 3
4. x < -4/5
5. x > 1
2007-02-15 02:11:44 · answer #3 · answered by jamesbdunn 2 · 0⤊ 0⤋
1.1
2.1
3.2
4.2
5.3
2007-02-15 02:08:23 · answer #4 · answered by fallinglight 3 · 0⤊ 0⤋
im in algebra and i dont know wat that is yet
2007-02-15 02:08:43 · answer #5 · answered by Ree 1 · 0⤊ 0⤋