Respuesta :

ANSWER

36 feet

EXPLANATION

We are given that the scale of the model is 1 inch to 9 feet.

The two flagpoles are 4 inches apart in the model.

To find the distance between them when they are installed, we have to use ratio/proportion.

Let the distance between them be x.

We have that from the scale:

1 inch = 9 feet

=> 4 inches = x feet

Now, we can cross-multiply:

[tex]\begin{gathered} 1\cdot x=4\cdot9 \\ \Rightarrow x=36\text{ feet} \end{gathered}[/tex]

Therefore, the distance between them when they are installed is 36 feet.