Kayla begins with a quadratic equation in vertex/graphing form. She is solving the equation for x. Step 1: y=a(x−h)2+k

Step 2: ya=(x−h)2+k

Step 3: ya−k=(x−h)2

Step 4: ±ya−k−−−−−√=x−h

Step 5: h±ya−k−−−−−√=x

Kayla is certain she has made a mistake but isn’t sure where. Identify where she made her mistake. Solve the equation showing all work.

answer: 7. if the functions had a negative leading coefficient and is of even degree, which statement about the graph is true?

step-by-step explanation:

arc length = 6.63311 ft.

step-by-step explanation:

the formula the arc measure is:

arc length s=2πr(c)/360

where:

c   is the central angle of the arc in degrees

r   is the radius of the arc

π   is pi, approximately 3.142

using the above formula we get

s =

thus we find that arc length of an arc for a circle of radius 20 feet and central angle 19 degrees is

6.63311 feet