Answer:
The answer to your question a) Perimeter = 12x² - 6 b) Perimeter = 21 in
Step-by-step explanation:
Data
side 1 = 4x² - 3
side 2 = 4x² - 2
side 3 = 4x² - 1
Process
1.- Calculate the perimeter of a triangle
Perimeter = side 1 + side 2 + side 3
-Substitution
Perimeter = (4x² - 3) + (4x² - 2) + (4x² - 1)
-Simplification
Perimeter = 4x² - 3 + 4x² - 2 + 4x² - 1
Perimeter = 12x² - 6
2.- Find the perimeter when x = 1.5
Perimeter = 12(1.5)² - 6
-Simplification
Perimeter = 12(2.25) - 6
Perimeter = 27 - 6
-Result
Perimeter = 21 in
Answer:
Step-by-step explanation:
The formula for determining the perimeter of a triangle is expressed as
Perimeter = a + b + c
Where a, b and c are the lengths of each side of the triangle.
The side lengths of the triangular straw are 4x² - 3 inches, 4x² -2 inches, and 4x² - 1 inches. The expression for the perimeter is
4x² - 3 + 4x² -2 + 4x² - 1
= 4x² + 4x² + 4x² - 3 - 2 - 1
= 12x² - 6
When x = 1.5, then
Perimeter = 12(1.5)² - 6
Perimeter = 21 inches
