Enter the function f(X) = x2 - 18x + 6 in the form of f(x) = a(x- h)2+ k, where a, h, and k are constants. Enter your answer in the first response box. Enter the x-coordinate of the vertex of the graph off in the second response box
f(x) =
X=

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

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64