1 point Item 1: Luke and Amy are starting a summer lawn mowing business and
want to make 20 signs like the one shown to advertise. They want
something eye-catching, so they decide to use a regular hexagon. (All
sides and angles are congruent.) Amy notices that the hexagon is made up
of 6 equilateral triangles. Using this information, what is the measure of
each interior angle of the hexagonal sign?
Interior
angle
LAWNS
R
US
,555 5555
120
A.12 B.180 C.60 D.90

answer: i don't understand it

step-by-step explanation: sorry

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).

x^2 + 81

we can factor this using difference of square binomials.

rewrite the equation:

x^2 - (-81)

factor:

(a^2 - b^2) = (√a^2 + √b^2)(√a^2 - √b^2)

(x^2 - (-81) = (x + √-81)(x - √-81)

we can remove the - from under the radical by multiplying it by i.

(x^2 - (-81) = (x + i√81)(x - i√81)

(x^2 - (-81) = (x + 9i)(x - 9i)

we can check our answer by using foil:

x^2 - 9ix + 9ix - 81i^2

x^2 - 81^2

i^2 = -1

x^2 + 81