Chapter 5 Pre Algebra

Solve for X.

• 2 ft

• 3 ft

• 4 ft

• 6 ft

The pair of figures is similar. Find the missing side.

• x = 12

• x = 3

• x = 40

• x = 4

The pair of figures is similar. Find the missing side.

• x = 20

• x = 12

• x = 5

• x = 4

Solve for X.

• 2 ft

• 3 ft

• 4 ft

• 6 ft

To find the height of a very tall pine tree, you place a mirror on the ground and stand where you can see the top of the pine tree.  How tall is the tree?

• 144 feet

• 72 feet

• 36 feet

Using a proportion, find the height of the tree.

• x = 0.0625 ft.

• 16 ft

• x = 16 ft.

Scale is 1cm = 8km. Hatboro and Smithville are 24cm apart on the map, what is the actual distance between the 2 cities?

• 3 km

• 216 km 

• 33 km

• 192 km

Megan drew a scale drawing of a house and its lot. The scale she used was 1 inch = 2 feet. The backyard is 78 feet long in real life. How long is the yard in the drawing?
____ = ____

• 39 inches

• 156 inches

• 38 inches

• 157 inches

Find the perimeter of the large triangle.

• 24

• 36

• 12

• 54

A tree is 11 feet tall and casts a shadow 8 feet long. A building nearby casts a shadow of 22 feet tall. How tall is the building? Choose the proportion that will solve this problem. 

• 11/8 = 22/x

• 11/8 = x/22 

• 8/11 = x/22

• 8/x = 11/22