S2.T2.L1 DOL: Geometric Mean

The geometric mean of two numbers is 20. One of the numbers is 50. What is the other number?

• The geometric mean is 2.5.

• The geometric mean is 4.

• The geometric mean is 8.

• The geometric mean is 12.

Examine the image and determine the value of x in △ABC.

• x = 10 units.

• x = 12 units.

• x = 16 units.

• x = 18 units.

Use the image to answer the question: What is the value of x?

• x = 15

• x = 12

• x = √15

• x = √34

Use the image to answer the question: Calculate the value of y.

• y = 4

• y = √7

• y = √20

• y = 20

Use right triangle proportionality to determine the missing side lengths in the image below.

• x = 10 , y = 20 , z = 5√3

• x = 5 , y = 20 , z = 10√3

• x = 20 , y = 5 , z = 10√5

• x = 5 , y = 20 , z = 3√10