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2007-04-16 08:38:50 · 4 answers · asked by Sable 1 in Science & Mathematics Mathematics

4 answers

First add 7 to both sides of the inequality:

-7 + 7 + z/4 => 7

As you can see -7 + 7 = 0, so

z/4 => 7

now multiply by 4 both sides of the inequality:

4*z/4 => 4*7
z => 28

2007-04-16 08:41:13 · answer #1 · answered by Rafael Mateo 4 · 1 0

z/4 ≥ 7
z ≥ 28

2007-04-16 15:48:36 · answer #2 · answered by Como 7 · 1 0

Multiply 4 from both sides:
-28+z≥0

Add 28 from both sides:
z≥28

2007-04-16 15:48:38 · answer #3 · answered by Anonymous · 0 0

-28 + z ≥ 0
z ≥ 28

2007-04-16 15:42:31 · answer #4 · answered by S. B. 6 · 1 0

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