Upper AA 66-ft-tall fence runs parallel to a wall of a house at a distance of 3030 ft. Find the length of the shortest ladder that extends from the ground, over the fence, to the house. Assume the vertical wall of the house and the horizontal ground have infinite extent.

0.33 ft

Step-by-step explanation:

From the diagram, triangle ACE is similar to triangle BCD.

Therefore,

Let the Length of the Ladder, L

Using Pythagoras theorem

To find the least value, we have to equate the derivative of L to 0.

Therefore:

b³-1080=0

b³=1080

b=10.26

The minimum length of the ladder is:

=0.33 ft

$8

step-by-step explanation:

it is pretty much backwards.

you take the 4x2 multiply that, and that is = $8

yes. we do proportions in probabilities.