a rectangle has a perimeter of 20 units, if the length is 6 units longer than the width, find the dimensisons of the rectangle. ( with a 3 different ways )

Respuesta :

Answer:

Step-by-step explanation:

Let's denote the width of the rectangle as \( W \) and the length as \( L \).

The given information can be translated into two equations:

1. Perimeter of a rectangle: \( 2L + 2W = 20 \)

2. Length is 6 units longer than the width: \( L = W + 6 \)

Now, we can solve for the dimensions of the rectangle using these equations. Here are three different ways to do it:

### Method 1: Substitution

Start with the equation \( L = W + 6 \) and substitute it into the perimeter equation:

\[ 2(W + 6) + 2W = 20 \]

Solve for \( W \) and then find \( L \) using \( L = W + 6 \).

### Method 2: Elimination

Combine the two equations to eliminate \( L \) and solve for \( W \):

\[ 2(W + 6) + 2W = 20 \]

Solve for \( W \) and then find \( L \) using \( L = W + 6 \).

### Method 3: Graphical

Graph the equations \( 2L + 2W = 20 \) and \( L = W + 6 \) on a coordinate plane. The point of intersection will give you the values of \( L \) and \( W \).

Choose the method that you find most convenient or are currently learning in your class. If you'd like a specific solution using one of these methods, let me know, and I can provide detailed steps.