chapter 2 homework

Question

A triangle has a perimeter of 40 inches. The medium side is 4 inches more than the shortest side, and the longest side is twice the shortest side. Find the shortest side.

 

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Answer 1

Hi Corina,

 

   chapter 2 homework
A triangle has a perimeter of 40 inches. The medium side is 4 inches more than the shortest side, and the longest side is twice the shortest side. Find the shortest side.

in=

 

To find the perimeter you add up the lenghts of all the sides.

Let x= the length of the smallest side

let x+4= the length of the medium side

2x=the length of the longest side

 

 

x+x+4+2x=40

4x+4=40

4x=36

x=9

x+4=9+4=13

2x=2(9)=18

 

ANSWER: the smallest is 9 inches, the medium side is 13 inches and the longest side is 18 inches.