Question

fred is making a quilt that uses a pattern of triangles like the one shown. write an equation that represents the missing side length if the perimeter is 24 centimeters. 9 cm 2 cm 2 cm a choose the correct answer, below. a. 9 + 2 + 2 + 2 = 24 b. 9 + 2 + 2 + a = 24 c. 2 + 2 + 2 + a = 24 d. 9 + 2 + 2 + a = 24

Explanation:

Step1: Recall the formula for the perimeter of a triangle

The perimeter \( P \) of a triangle is the sum of the lengths of its sides. If the sides are \( 9\), \( 2\), \( 2\), and \( a\), then \( P=9 + 2+2 + a\).

Step2: Set up the equation for the given perimeter

We know that \( P = 24\). So the equation is \( 9+2 + 2+a=24\).

Answer:

D. \( 9 + 2+2 + a=24\)