Friday

October 24, 2014

October 24, 2014

Posted by **Amy** on Wednesday, November 2, 2011 at 10:27pm.

- Calculus -
**Steve**, Thursday, November 3, 2011 at 4:53pmIf you draw a diagram, let x be the distance of the base of the ladder from the wall, and h the height of the ladder against the wall:

x^2 + h^2 = 400

When h = 12,

x^2 = 400 - 144 = 256

x = 16

2x dx/dt + 2h dh/dt = 0

32 * 2 + 24 dh/dt = 0

dh/dt = -64/24 = -8/3

**Answer this Question**

**Related Questions**

Calculus Ab - A 26 foot step ladder is leaned up against a 30 foot building to ...

Math - A ladder leans against a vertical wall and the top of the ladder is ...

Calculus - The top of a 24 foot ladder, leaning against a vertical wall, is ...

Calculus - A 17 foot ladder is leaning against a wall. The bottom of the ladder...

Calculus - A ladder 15 feet long leans against a vertical wall. Supppose that ...

Calculus - 1a. 15 ft ladder is placed against a vertical wall. the bottom of the...

calculus - A 20 ft ladder is leaning against the side of a house. If the bottom ...

Math - Suppose there is a 10 meter ladder leaning against the wall of a building...

Calculus! - A 16 ft. ladder leans against a wall, with the top being 12 ft. from...

Math trig - a ladder 24 feet long leans against the side of a building, and the...