The following table summarises the data from a survey on the ownership of iPods among families with different levels of income. Determine whether the two nominal variables are related. Ownership Level of income No 40 32 48 Yes 30 48 ! 52

your answer is -9

step-by-step explanation:

step-by-step explanation: 2

there is no points to select.

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