A5-foot ladder is leaning against a vertical wall. if the bottom of the ladder is being pulled away from the wall at the rate of 10 feet per second, at what rate is the area of the triangle formed by the wall, the ground, and the ladder changing, in square feet per second, at the instant the bottom of the ladder is 4 feet from the wall?

Step-by-step explanation:

The area is given by:

The rate is given by the derivative of that function:

   (1)

From the original question we know that

                  (2)

We also know the relation between x and y:

If we derive this function and evaluate for x=4feet:

       (3)

Replacing (2) and (3) into (1):

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation:

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.