Question

I need help please ​

Answer 1

Given :

• The shape of the yard is rectangular
• Width is 15 yards less than the length
• Total fencing required is 70 feet

To find :

• Appropriate equation
• Dimensions

Solution :

We know that for fencing we need to find the perimeter ,

• Perimeter of a rectangle
• => 2 ( length + breadth )

Let us assume the value of length be x yards

• Width = x - 15 yards

Solving the question we get ,

• 2 ( x + ( x - 15 ) ) = 70
• 2 ( x + x - 15 ) = 70
• 2 ( 2x - 15 ) = 70
• 4x - 30 = 70
• 4x = 100
• 
  `\sf\implies\:x\:=\:(100)/(4)`
• x = 25

Length = 25 yards

Breadth = 25 - 4

• 21 yards

Answer 2

L = 25

Explanation:

Let's call the Length x and width x - 15 since the width is 15 less than length

Eric needs 70 of fencing in total, the perimeter of a rectangle is calculated by adding all sides

x + x + (x - 15) + (x - 15) = 70 add like terms

4x - 30 = 70 add 30 to both sides

4x = 100 divide both sides by 4

x = 25