Question

a rectangle has length x and width 5. write an expression for the perimeter.

Explanation:

Step1: Recall perimeter formula

The perimeter $P$ of a rectangle is given by $P = 2\times(\text{length}+\text{width})$.

Step2: Substitute given values

Here, length is $x$ and width is $5$. So $P=2\times(x + 5)$.

Step3: Expand the expression

Using the distributive property $a(b + c)=ab+ac$, we get $P = 2x+10$.

Answer:

$2x + 10$