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Two sides of a triangle are 3x - 4 and 2x + 5. If the perimeter is 9x + 6, what is the length of the third side of the triangle?

Guest Feb 19, 2017
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+5

Add the sides....subtract this sum from the perimeter

 

[3x - 4] + [2x + 5[   =

 

5x + 1

 

So

 

[9x + 6]  - [ 5x + 1]  =

 

4x + 5   =  length of the remaining side

 

 

cool cool cool

CPhill  Feb 19, 2017

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