Question

Plz help :-)

Answer 1

Question:

The perimeter of an equilateral triangle is 9n - 12. Write an expression to represent the length of each side.

Solution:

• The perimeter of an equilateral triangle is 9n - 12.
• We know, perimeter of a triangle is the sum of the three sides of the triangle.
• Also, in an equilateral triangle, all the sides are equal.
• Therefore, the length of each side of the triangle

$= \frac{9n-12}{3} \\ = \frac{3(3n - 4)}{3} \\ = 3n - 4$

Answer:

The length of each side of the triangle is 3n-4.

Hope it helps!!

Answer 2

Answer:

$9n - 12 \rightarrow \frac{1}{3} (9n - 12) \\ = \frac{3}{3} (3n - 4) \\ l = 3n - 4$