A ladder reaches a window 20 feet above the ground. The foot of the ladder is 4 feet from the wall.

ft

or about 20.396ft when rounded to the third decimal place

Step-by-step explanation:

(assuming the question is to find the ladder's length)

let "l" be the ladder's length

ft

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3

7/2

(decimal: 3.5)

welcome ; )

step-by-step explanation: