Question

14. Michelle simplified an expression for the perimeter of the rectangle below and got X + 35.

Explain her error, and include the correct expression for the perimeter.
X + 23
I CAN SIMPLIFY EXPRESSIONS BY EXPANDING WITH THE DISTRIBUTIVE PROPERTY.
8.EE
Simplify the expression. 6. Simplify the expression. 17. Simplify the expression

2(5/6x+23)

Answer 1

Explanation:

Answer 2

The correct expression for the perimeter is
`P=((5)/(3)x+70)\ units`

see the explanation

Explanation:

The complete question in the attached figure

Let

L ----> the length of rectangle

W ---> the width of rectangle

we know that

The perimeter of rectangle is equal to

`P=2(L+W)`

In this problem we have

`L=((5)/(6)x+23)\ units`

`W=12\ units`

substitute the values

`P=2((5)/(6)x+23+12)`

`P=2((5)/(6)x+35)`

`P=((10)/(6)x+70)\ units`

Simplify

`P=((5)/(3)x+70)\ units`

so

Michelle didn't multiply the sum of length and width by 2