Question

The perimeter of the triangle shown to the right is 143 meters. Find the length of each side.

Answer 1

Hello!

First:

write an equation.

5x + (7x+8) + (7x+2) = 143

now combine like terms

19x + 10 =143

now subtract 10 from both sides

19x = 133

divide 19 on both sides.

x = 7.

Are you done here? Nope, we need to find out what each side is, so lets plug in the number 7 for x.

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For the side 5(x)

5(7) = 35

This side is 35m

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For the side 7x + 2

7(7) + 2

49 + 2

51

This side is 51m

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For the side 7x + 8

7(7) + 8

49 + 8

57

This side is 57m.

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I hope this helps,

Have a great day!