6. a "tiling" of the plane occurs when we fill the entire,
infinite plane with a repeated pattern. the image to the
right shows a portion of one such tiling. the pattern
extends forever in all directions.
(a) give all angles of rotational symmetry between 0 and
360° about the two marked points.
point a:
point b:

step-by-step explanation:

the answer is 89 d

i took the test

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0

the correct answer is c) 2.

well, because the $0.25 is an added cost depending on how many minutes, the answer would be y = 30 + 0.25x.