CPM Homework Help : CC2MN Problem 6-45

On your paper, sketch the algebra tile shape at right. Write an expression for the perimeter, and then find the perimeter for each of the given values of $x$ . Homework Help ✎

Hint:

The perimeter is the sum of all the sides. Mark each side with its length to help you find the perimeter.

More Help:

Combine like terms to form an expression of the perimeter.

$x=7$ cm
Hint (a):
Substitute $7$ for $x$ in the algebra tile shape or the expression you found to find the perimeter for this given value.

$x=5.5$ cm
Hint (b):
Substitute $5.5$ for $x$ in the algebra tile shape or the expression you found to find the perimeter for this given value.