The first side of a triangle measures 5 in. less than the second side, the third side is 3 in. more than the first side, and the perimeter is 17 in. How long is the third side? If s represents the length of the second side, which of the following represents the length of the third side?

Question

Mathematics

Ann Hudson

10 January, 14:48

The first side of a triangle measures 5 in. less than the second side, the third side is 3 in. more than the first side, and the perimeter is 17 in. How long is the third side? If s represents the length of the second side, which of the following represents the length of the third side?

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Answers (1)

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Tucker · Answer 1

First side = x

second side = x+5

third side = x+3

perimeter = 17

x + x+5 + x+3 = 17

3x = 17-5-3

3x = 12-3

3x = 9

x = 9/3

x = 3 in (first side)

x+5 = 3+5 = 8 in (second side)

x+3 = 3+3 = 6 in (third side)