The three sides of a triangle are n, 4n−8, and 2n+8. If the perimeter of the triangle is 63 feet, what is the length of each side?

Question

The three sides of a triangle are n, 4n−8, and 2n+8. If the perimeter of the triangle is 63 feet, what is the length of each side?

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Ruby 3 weeks 2021-09-26T14:59:14+00:00 1 Answer 0

Answers ( )

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    2021-09-26T15:00:58+00:00

    Answer:

      9 ft, 28 ft, 26 ft

    Step-by-step explanation:

    The perimeter is the sum of side lengths, so …

      P = a + b + c

      63 = n +(4n -8) +(2n +8) . . . . fill in the given side lengths

      63 = 7n . . . . . . simplify

      9 = n . . . . . . . . divide by 7

      4n -8 = 36 -8 = 28 . . . . second side length

      2n +8 = 18 +8 = 26 . . . . third side length

    The side lengths are 9 ft, 28 ft, 26 ft..

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45:7+7-4:2-5:5*4+35:2 =? ( )