
Concept explainers
(a)
To find: the dimensions of the rectangle, and to find the area of rectangle.
(a)

Answer to Problem 21PPE
The dimensions of the rectangle is,
Length =
Area of the rectangle is
Explanation of Solution
Given information:
The rectangular tile has an area of
A rectangle with algebra tiles to model the expression
Calculation:
The dimensions of the rectangle is,
Length =
Area of the rectangle =
So, area of the rectangle is
(b)
To find: the areas of the green region and of the yellow region.
(b)

Answer to Problem 21PPE
The area of the green region is
The area of the yellow section is 8.
Explanation of Solution
Given information:
The rectangular tile has an area of
A rectangle with algebra tiles to model the expression
Calculation:
The area of the green region is
The area of the yellow section is,
So, the area of the yellow section is 8.
(c)
To complete: the given statement.
(c)

Answer to Problem 21PPE
The statement is,
Explanation of Solution
Given information:
The rectangular tile has an area of
A rectangle with algebra tiles to model the expression
Given statement is
Calculation:
As
The statement can be completed as,
Chapter 1 Solutions
High School Math 2011 Algebra 1 Student Companion Grade 8/9
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