A triangle has sides 3x + 7, 4x - 9, and 5x + 6. Find the polynomial
that represents its perimeter
2006-09-28 16:07:35 · 5 answers · asked by Samantha F 1 in Education & Reference ➔ Higher Education (University +)
There should be no equals (=) in your polynomial. Because unlike the one answer states, the perimeter of a triangle is not 180. The sum of the interior angles of a triangle is 180.
A perimeter can be anything.
So first of all we should discuss the term polynomial. This is a fancy word for a combination of numbers and variables. All it is really asking you to do is combine all the like terms.
A perimeter is the sum of all the sides. So...Side1 + Side2 + Side3 = Perimeter
(3x +7) + (4x-9) + (5x+6) = Perimeter
Now for the combining of like terms...
3x+4x+5x=12x
7-9+6=4
So our answer is the Perimeter is represented by the polynomial:
12x+4
2006-09-28 16:17:12 · answer #1 · answered by merfie 2 · 1⤊ 0⤋
its 5
2006-09-28 16:10:45 · answer #2 · answered by Nes S 2 · 0⤊ 1⤋
You have to add those things together:
3x + 7
4x - 9
5x + 6
When combining like terms, you get:
12x+4
You have to ADD the sides to get the perimeter.
2006-09-28 16:09:34 · answer #3 · answered by Anonymous · 1⤊ 0⤋
12x+4
2006-09-28 16:09:44 · answer #4 · answered by jbblackdog11 3 · 0⤊ 1⤋
9x+4=180 solve for x
2006-09-28 16:09:13 · answer #5 · answered by ay3e 2 · 0⤊ 2⤋