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45 votes
45 votes
Two sides of a triangle have lengths 7 and 15. Which inequality represents the possible lengths for the third side , x?

User Mohsenasm
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1 Answer

15 votes
15 votes

Answer:

8 < x <22

Explanation:

In this question we know the two sides of the triangle to be 7 and 15, let's all the other side x

One one side of the inequality we have:

7+15>x

22 > x

On the other side we have

7 + x > 15

X > 15-7

X>8

When we rearrange these inequalities above we have

8<X<22

We saw from the calculations that 8 is less than X and X is less than 22.

User Blue Star
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