3 years ago

Find the simplest expression for the perimeter of the triangular roof truss.

1 answer:

6 0

Perimeter of triangle = all sides added up
3a + 4 + 2a - 7 + 9a + 11

now add like terms
3a + 2a + 9a = 5a + 9a = 14a

4 - 7 + 11
= -3 + 11 = 8

so we have 14a + 8
as our simplest expression

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