Which of the following is an example of an electromagnetic wave?
red light
ocean waves
sound waves
earthquakes
question 7 multiple choice worth 2 points)
(02.03 lc)

not me

step-by-step explanation:

i wish i did i would like to get a desert ghost ball python

i believe it's a.

i'm not sure on this one, most likely correct.

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