Which inequality represents the values of X that insure triangle ABC exists

7/4 < x < 11/2

Step-by-step explanation:

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My answer

Given the information:

All of these three triangle inequalities must be satisfied:

<=> 2x + 4 + 6x > 18

<=> 8x > 14

<=> x > 7/4

6x + 18 > 2x + 4

<=> 4x > -14

<=> x > -14/4

18 + 2x + 4 > 6x

<=> 22 > 4x

<=> x < 11/2

So the inequality represents the values of X that insure triangle ABC exists is:  7/4 < x < 11/2

Hope it will find you well.