Whoever solves gets brainlist
ameliaswan

13 < y + x < 32

Step-by-step explanation:

x in (8,10) and y in (5,22) implies x + y in (8+5,10+22) = (13,32) so 13 < y + x < 32.

14 < y+x < 31

Step-by-step explanation:

x = 9

y could be any number from 6 to 21

5+9 < y + x < 22+9

14 < y+x < 31

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

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