Respuesta :
If two sides of the triangle are 2a+b and a-9b. Then the third side of the triangle is 4a - 3b.
What is the triangle?
Triangle is a polygon that has three sides and three angles. The sum of the angle of the triangle is 180 degrees.
The perimeter of a triangle is 7a-11b.
If two of its sides are 2a+b and a-9b.
Then the third side of the triangle will be
Let x be the third side.
We know that the perimeter is the sum of all sides of the triangle. Then we have
2a + b + a - 9b + x = 7a - 11b
3a - 8b + x = 7a - 11b
x = 4x - 3b
More about the triangle link is given below.
https://brainly.com/question/25813512
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