Answer:
Length = 9 + x meters
Step-by-step explanation:
The rectangle below has an area of 81- x² square meters and a width of 9-x meters. What expression represents the length of the rectangle?
Area of a rectangle = Length × Width
Area = 81 - x²
Width = 9 - x
Hence
Length = Area /Width
= 81 - x²/9 - x
= 9 + x meters
