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How do you solve this inequality

How do you solve this inequality-example-1

1 Answer

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Answer:

w < 0 ∪ 9 < w

Explanation:

You can multiply by w to eliminate the fractions. This gives rise to two cases, one for w > 0, and one for w < 0.

For w > 0

In this case, the multiplier is positive, so the sense of the inequality remains unchanged. The inequality becomes ...

... 2 +3w > 29

... 3w > 27 . . . . subtract 2

... w > 9 . . . . . . divide by 3 (again, a positive number)

For w < 0

Multiplying an inequality by a negative number reverses the sense of the comparison. This gives us ...

... 2 +3w < 29

... 3w < 27 . . . . . . subtract 2

... w < 9 . . . . . . . . divide by 3 (a positive number)

The solution to this inequality is the intersection of this condition with the condition that w < 0. That will be ...

... w < 0

Solution

So, the solution to the given inequality is ...

... w < 0 ∪ 9 < w

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Comment on the graph

We have rewritten the inequality to the form ...

... 2/w +3 -29/w > 0 . . . . . . subtract the right side

The graphing calculator has plotted the curve represented by the left side of this inequality. The blue highlighting shows where that is greater than zero.

How do you solve this inequality-example-1
User Danilo Akamine
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