Geometric mean

Find the length of AB.

• 36

• 18

• 6

• 12

Tags

CCSS.HSG.CO.C.9

The accompanying diagram shows a 24-foot ladder leaning against a building. A steel brace extends from the ladder to the point where the building meets the ground. The brace forms a right angle with the ladder.If the steel brace is connected to the ladder at a point that is 10 feet from the foot of the ladder, which equation can be used to find the length, x, of the steel brace?

• $\frac{10}{x}=\frac{x}{14}$

• $\frac{10}{x}=\frac{x}{24}$

• $10^2+x^2=14^2$

• $10^2+x^2=24^2$

Tags

CCSS.8.G.B.8

In the accompanying diagram, triangle ABC is a right triangle and CD is the altitude to hypotenuse AB. If AD=4 and DB=16 find the length of CD.

• 0

• 64

• 8

• 32

Tags

CCSS.HSG.SRT.C.6

CCSS.HSG.SRT.C.8

In right triangle ABC, altitude CD is drawn to hypotenuse AB. Find the length of BC.

• 80

• 40

• 0

• 8.9

Tags

CCSS.HSG.SRT.C.6

CCSS.HSG.SRT.C.8

Find the value of x.

• 0

• 48

• 4.9

• 24

Tags

CCSS.HSG.CO.C.9

What is geometric mean of 4 and 9?

• 5
• 6
• 7
• 8

Tags

CCSS.8.EE.A.2

Find the value of x.

• 15√5

• 5√5

• 5√3

• 3√5

Tags

CCSS.HSG.CO.C.9

Find the value of y. 

• 4
• 2√6
• 6√2
• 12

Tags

CCSS.HSG.CO.C.9

Find the value of x.

• 12

• 4√2

• √32

• 16

Tags

CCSS.HSG.CO.C.9

Find the geometric mean for 5 and 8

• 4
• 10
• 2√10
• 4√10

Tags

CCSS.8.EE.A.2