contestada

I
A tree casts a shadow 42 feet long. At the same time, a person 5 feet tall casts a shadow 7 feet
long. What is the height of the tree?
x
11
59 ft
30 ft
5 ft
xft
7ft

Respuesta :

Answer:

The tree is 30 feet

Step-by-step explanation:

Set up a proportion

[tex]\frac{height}{shadow}[/tex] = [tex]\frac{height}{shadow}[/tex]  Fill in what you know

[tex]\frac{x}{42}[/tex] = [tex]\frac{5}{7}[/tex]  Cross multiply

7x = 210  Divide both sides by 7

x = 30