A musician purchases a pair of cube-shaped speakers that are 9 inches across. If the face of the speaker takes up of the total volume of the speaker, how much volume is left in both speaker cabinets? 607 cu. in. 1215 cu. in. 1458 cu. in. 800 cu. in.

it has changed from the width and the height.

step-by-step explanation:

beluga wheeeaaalle matt

step-by-step explanation:

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