SOLUTION: A triangle has sides 3x + 7, 4x - 9, and 5x + 6. Find the polynomial that represents its perimeter. Thanks.

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Question 69772This question is from textbook Beginning Algebra
: A triangle has sides 3x + 7, 4x - 9, and 5x + 6. Find the polynomial that represents its perimeter.
Thanks. This question is from textbook Beginning Algebra

Answer by Zoop(21) About Me  (Show Source):
You can put this solution on YOUR website!
The perimeter of a triangle is equal to the sum of all of its sides lengths.
Therefore, in your triangle's case,
p=3x%2B7%2B4x-9%2B5x%2B6
Combine like terms!
p=%283x%2B4x%2B5x%29%2B%287-9%2B6%29
Simplify.
p=12x%2B4
And you're done. =)