1. Use the quadratic equation x^2 + 18x = 25 to answer the following questions.

Part A: Find the value of c that will result in a perfect square trinomial.
x^2 + 18x + c = 25 + c

Part B: Rewrite the above equation into a perfect square binomial form.
( x + ? )^2 = ?

Part C: What is the value of x?

2. Find the roots of the quadratic function by completing the square:
x^2 + 4x - 1 = 0.

oof

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

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step-by-step explanation: