Select the statements that are true based on the following given information. D={xl x is a whole number}
E = {x\ x is a perfect square < 36)
F = {x\ x is an even number between 20 and 30)
The expression Dn Eis (1, 4, 9, 16).
The expression DNF is (12, 14, 16, 18)
DU (En F) is (all whole numbers).
(En F) is the empty set.
The expression D N (E U F) is 25

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

s

step-by-step explanation:

where are the graphs?

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