Stairs that measure 22 feet long are used to let Use the drop downs to answer the following questions
passengers off an airplane. The distance from the bottom What measure represents a and cin the Pythagorean
of the stairs to the point perpendicular to the plane door is theorem, a2 + b2 = c2?
11 feet.
a=
22 ft
How high is the plane door from the ground?
Round to the nearest hundredth.
feet.

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet