Respuesta :
The needle at the top of the model should be 3.5 inches.
Answer:
3.5 inches
Step-by-step explanation:
Set up a proportion:
[tex]\frac{9 ft}{1 in} = \frac{31.5 ft}{x in}[/tex]
Cross multiply in order to solve for x:
9x = 31.5
Divide by nine:
x = [tex]\frac{31.5}{9}[/tex]
Simplify:
x= 3.5